We recently upgraded from 3.5.16 to 5.0.3. We have been working for a month with Atlassian support on two key problems without success: We cannot create a working AppLink with our JIRA 6.2.7, and we cannot disable/add licenses to several add-ons.
Should I try to resolve these issues in version 5.0.3, or should I upgrade fully to 5.6.4 (in our test environment first) and resolve them there?
Do I have to upgrade first to 5.1.4, or can I upgrade directly to 5.6.4?