From what you wrote, you are not seeking to deactivate a Premiere Elements serial number from crashed computer. So, the chances seem slim to none about Adobe Chat helping you with a non current version issue. That does not stop you from finding that out for yourself, but I just wanted to prepare you for that possibility.
Have you tried to troubleshoot the issue yourself in ways other than uninstall reinstall?
Have you gone through the Adobe document for Photoshop Elements and Premiere Elements on this issue? If not, please review the following Adobe document
Please review, consider, and let us know the outcome.