We were having an issue with the External Share for Confluence third party app and were prompted by support to uninstall it from our site. After doing so, when I try to re-install it I get the generic "We are unable to do it at this time. Retry again after some time" error. I was told that I may need to remove the billing subscription from my account to fully redo the app, but was instructed that I need Atlassian support. They haven't answered my ticket I put in on Friday at high priority. What should I do next?