Hey i'm having this same problem , so  i wanna ask did your problem got solved or not? please reply.

Dear Applicant,

I hope you are doing well, perhaps its a technical error from their side. Usually it's turns back to normal in a few days, if not I would suggest you to contact the council Linguistic body or the helpline to solve your issue. Since they can tell you exactly what might be the fault here and the team will surely help you.

So contact them at the earliest.

Hope this helps !!