Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
The APS Catalog has been deprecated and removed from all Plesk Obsidian versions. Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.
I think this is normal Plesk behaviour. At least the same thing happens with OBAS. I assume he can select both subscriptions, right? If so, it's perfectly normal behaviour and the second user/pass combination is for FTP access to the specified domain.
Can you try testing the following: https://domain.tld:8443 with username: the main website/FTP access username and password: that username's password? It should work, though I'm not really sure as I don't have WHMCS installed.