First of all let me just say you are doing an amazing job here

I am not able to create an account on the UKVCAS website. Once I provide required informations (access code, password, etc.), "Set up account" button is still not active to go further.
There is a COVID-19 service status on the top of the page saying UKVCAS suspended the service. Could it be an answer why register form does not work at the moment?
Second thought. UKVCAS website says:
"EU Settlement Scheme applications
If you are applying through the EU Settlement Scheme you will need to scan and upload all of your supporting documents when making your application with UKVI. Please do not upload additional documents with your application when using the UKVCAS service".
Does it mean I can not use this service?
Thanks.
otuel