After over a dozen communications via email with support -- the issue with this specific complaint was resolved. It took nearly three months. Yes, I will continue to use ProProfs regardless because the issues were eventually resolved and the lack of personnel may be global.
Take-away:
Use the form online to obtain a support ticket number (not a phone call or chat). The ticket number I received through this method remained constant, where the others changed and I had to reiterate the problem every time as well as the steps I already took to attempt resolution.
Send screenshots of the error in the email itself and not as an attachment. Also send all of the links that produce the faults.
Respond to the most recent email received on that same ticket number every few days to check on the status (you receive numerous generic emails where your reply will drop into a void). Make sure all prior communications are in that email when checking the status.
Eventually, you will reach someone on the other end of the communication who can/will resolve the problem. Again, this may be pandemic-related and thus temporary.