During a migration from Vtiger 7.0.1 to Vtiger 7 I got the attached warning saying the custom modules are not compatible even if the modules are marked as compatible with version 7.*
Thanks @cmaggi for the fast replies, We have rejected those modules from extension store as they are violating the guidelines. While migrating, will perform a check whether installed extension modules are compatible or not.If they are not passed the check we will mark them as failed.
It has to be approved from marketplace(extension store) team.
b. Has to be way to enable a custom module if they have a zip file right?
Once it is approved, you can see that extension in your instance extension store page. And there you can see Update button (if the extension already installed)
Version 7.x brings in structural change to module and layout, so pre 7.x modules won't likely work. To provide heads up to user about this before migration check is made against installed custom modules.