Domain is disabled in Plesk and you cannot activate domain.

To solve this problem: log on server remote desktop and run these commands

cd C:\Program Files (x86)\Parallels\Plesk\admin\bin

dbclient.exe --direct-sql --sql="select status ,id ,name from domains where name='domain_name'"

dbclient.exe --direct-sql --sql="update domains set status = 0 where name='domain_name'"

Then go back to Plesk and try suspend / un-suspend subscription.

Plesk error "the domain or website cannot be activated because it was disabled by your hosting provider" will be gone after following above steps.