Lighroom classic 6.14 opens and closes in a split second.

I have recently run into some issues with adobe lightroom.

I have been using adobe lightroom classic 6 version 6.14, but after changing password on my Adobe account i have been running into an issue. The issue is that the moment i open Adobe Lightroom the application automatically closes right away after showing the loading screen for a split second.

The reason version 6.14 is so important is that is where i have set in place the keyword system and tagged all photos with names, when i try the newer versions of lightroom (and a updated lightroom classic version) my keyword/tags are not to be found.

Is there any way i can import my tags/keywords from 6.14 version to the updated versions?
Is there a possibility i can reinstall my 6.14 version? (So far i have not been able to find 6.14 for download anywhere on adobes websites) however in Adobe Creative Cloud i have the option to unninstall 6.14 but i am afraid to do so incase it wont let me reinstall after.