I have already paid for this
Suddenly I can not access any menus.
Only the following page is displayed continuously
An error occurred and your request couldn't be completed.
Click here to go back to the home page
I can't download and also access my account information
Out of curiosity:
1) what browser and browser version number are you using when you get the error message?
2) are you using the english language version of the videoscribe website or a different language
This might be kind of a longshot, but maybe videoscribe is trying to redirect you to a broken or missing non-english version of the website.
After you login and get the error page, can you try to go to: https://www.videoscribe.co/en/
(in the hope that the "EN" at the end of that URL will manually force you to the english version of the site, instead of choosing a language programmatically)