Nadhim Zahawi - do you remember when you said this? @nadhimzahawi "We have no plans to introduce vaccine passports. We have vaccinated, as of yesterday, 2,431,648 first dose and 412,167 second dose. No one has been given or will be required to have a vaccine passport." 

 That was the cause: this is the result: 

 "Caution: This account is temporarily restricted. You’re seeing this warning because there has been some unusual activity from this account. Do you still want to view it?"