Cannot log in to MQL5 from inside terminal

 
Using the same credentials as web platform, I continue to get the message incorrect username/ password

I have reset the password, and still to log into MQL5 from inside the terminal isn;t working... I use the same for MT4 and am logged in without problem?

Do I need a different USername for MT5? I'm not usually a dummie when it come to tech, but I'm stuck here?

(yes I have also edited uN & PW in Tools>> Options>>Community)
 

As far as I understand -

 
Besides, there is one summary post (post ) where I collected some possible reasons of this issue.
On File Menu am unable to Login to Community from MT4
On File Menu am unable to Login to Community from MT4
  • 2020.03.15
  • www.mql5.com
I don't know what the problem is... Help please...