As you said that you have tried “Repair Kit” and also Other browsers, But it should have already worked well with Chrome.
And As per my knowledge, you should check out the Dedicated IIS Application pool status once, Because The website has the same Domain name and application pool already exists which you make sure in the IIS Application Pool.
I can suggest you way to resolve your issue,
- First, In the Domain section, check if the domain for ex. test.com exists, remove it if it does.
- Then Connect to the server by Remote Desktop Protocol
- Now enter IIS, Sites, and test.com and remove the site from there.
- Again Go to IIS, then Application Pool and Test.com(Domain)(pool).
- Now, Remove the Application pool for that domain.
- Now, You create Subscription Test.com again in the Plesk panel.
I hope that you will get your query resolved with this suggestion.