I must say that I I don't know what could be causing this. It sounds like the tokens that we generate for the sidebar contents are somehow expiring or otherwise invalid, but I cannot reproduce that with e.g. Stand-up.
I think your best bet is to contact HipChat Support, maybe they have had similar cases and would be able to help you.
All good things come to an end - thanks to all our customers and partners who have been along the Hipchat and Stride journey with us. As of Feb 15th 2019, Hipchat Cloud and Stride have reached ...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs