Please check out my experience with that type of problem with Premiere Elements 12/12.1.
Involved Hosts File and SLCache and SLStore Folder renaming
Involved updating of the Adobe Application Manager
If all else fails, you can try to get input on this matter from Adobe via its Adobe Chat under its topic "Downloading, Installing, and Setting Up."
Please let us know the outcome.
Any questions or need clarification, please do not hesitate to ask.