Confusion over the direction of Twitter as a platform has continued after the sign-up option for its Twitter Blue subscription disappeared barely a day after going live, and grey "Official" badges returned less than two days after Elon Musk ordered their removal.

It comes as more high-profile staff responsible for vital areas such as trust and safety, data privacy, cyber security, and complying with regulations suddenly left the social media giant.

This morning, the option to sign up for Twitter Blue, which gives users a blue verification badge if they pay $8 a month had vanished from Twitter's iOS app despite only being introduced on Thursday.

At the same time, new grey Official badges for large organisations began reappearing on some Twitter profiles less than two days after Mr Musk halted their introduction hours after their own initial launch, calling it "an aesthetic nightmare".

The blue badges had been created as a way of differentiating between verified accounts which had been awarded them previously by Twitter after being confirmed as authentic and those which had been bought under the new Twitter Blue scheme.

The grey tick labels have returned to some accounts after Musk recently 'killed' them

The confirmed departure of Yoel Roth, Twitter's head of trust and safety, has been labelled a major blow to the site after many raised concerns about the Twitter Blue subscription being abused by bad actors buying a blue tick to pose as real people and businesses to commit fraud and spread misinformation on the platform.

Mr Roth, a previously little-known executive, had became the public face of Twitter's content moderation after Mr Musk took over, and who had been praised by him for defending Twitter's ongoing efforts to fight harmful misinformation and hate speech.

Mr Musk began firing thousands of Twitter staff last week as part of cost-cutting measures and told workers in his first address to them on Thursday that he was banning remote working and that "difficult times" lay ahead and which might end with the collapse of the social media platform if they cannot find new ways of making money.

"Without significant subscription revenue, there is a good chance Twitter will not survive the upcoming economic downturn," he said.

A number of advertisers are said to have paused advertising with Twitter - the company's biggest source of revenue - over the ongoing disarray at the firm.

Regulators in the US have now said they are watching events at Twitter with "deep concern" and warned Mr Musk that no chief executive is "above the law".

Meanwhile, a number of fake accounts posing as authentic, high-profile figures by using blue checkmarks gained through Twitter Blue have already been reported on the platform.

US-based PR strategist, Max Burns, said he had seen fake accounts with the verified blue tick badge bought through Twitter Blue posing as support accounts for real airlines and asking customers who were trying to contact them on Twitter to direct message the fake accounts instead.

"How long until a prankster takes a real passenger's ticket information and cancels their flight? Or takes their credit card info and goes on a spending spree?" he said.

"It will only take one major incident for every airline to bail on Twitter as a source of customer engagement."

Mr Burns later said that Mr Musk blocked him on Twitter when he asked if the new Twitter owner had any comment to make on the incident.

Meanwhile, Mr Musk's only comments have been to say Thursday was "quite the day", before adding: "Usage of Twitter continues to rise. One thing is for sure: it isn't boring!"

He also claimed the company had hit an "all-time high of active users".

Irish data watchdog concerned over changes at Twitter

Meanwhile, the Irish Data Protection Commission says it is making inquiries with Twitter following reports that a number of senior executives have resigned from the company.

Among those believes to have left Twitter are its Chief Privacy Officer, Irish man Damien Kieran.

He was also the company's Data Protection Officer.

"We have not been officially notified of any changes by Twitter," said Graham Doyle, Deputy Commissioner with the DPC.

"We have read media reports about the departure of a number of senior staff, including their Data Protection Officer, and we are making inquiries with Twitter," he said.

One of the areas of concern for the DPC involves 'main establishment'. Under data protection regulations, Twitter is 'main established' in Ireland which means decisions about the processing of EU users' personal data are made here.

"We will want to establish, following media reports, if Twitter intends to make changes and if so, this could have a knock-on effect in terms of Twitter being able to continue to avail of the one-stop-shop system of main establishment," Mr Doyle said.

A view of Twitter offices in Dublin

Yesterday, Twitter's Chief Security Officer Lea Kissner tweeted that she had quit, while Robin Wheeler - who moderated a Twitter Spaces chat with Mr Musk on Wednesday as he tried to assuage advertisers' concerns - also resigned.

Mr Kieran and Chief Compliance Officer Marianne Fogarty also resigned, according to an internal message posted to Twitter's Slack messaging system by an attorney on its privacy team and seen by Reuters.

Mr Musk last night raised the possibility of the social media platform going bankrupt.

The billionaire told Twitter employees on a call that that he could not rule out bankruptcy, Bloomberg News reported, two weeks after buying it for $44 billion - a deal that credit experts say has left Twitter's finances in a precarious position.

The US Federal Trade Commission said it was watching Twitter with "deep concern" after the resignations, which potentially put Twitter at risk of violating regulatory orders.

Ms Wheeler was the face of Twitter for advertising after Musk took over. Mr Roth, who was head of safety and integrity at Twitter, has said Twitter had reduced views of harmful content in search results by 95% compared to before Mr Musk's acquisition.

Mr Musk, who moved to clean house after taking over Twitter for $44 billion on 27 October, has said the company was losing more than $4 million a day, largely because advertisers started fleeing once he took over.

Elsewhere, Minister for Finance Paschal Donohoe has said many if not all tech companies are "still highly committed" to Ireland despite a spate of redundancies.

He said while regrettably some people are losing their jobs, he hopes it can encourage some of them to set up their own businesses in Ireland as he hailed "the scale of tech entrepreneurship."

He said it is a link he wants to see strengthened as he described how some Irish companies have scaled up to become global enterprises.

He said despite the job losses Ireland's tech sector is far bigger than it was a few years ago with lots of new companies developing.

Additional reporting: Brian O'Donovan