Anyone experiencing Slack integration problems since 4th of September?

Greetings,

We host a service desk on Jira and we had set up Slack notifications since March 2026. They were working fine until 4th of September 2026 where we received the last notification.

I tried managing the configuration through Slack and Jira, everything seemed healthy. I tried changing a bit the config of the notifications but with no luck. We tried creating dummy requests to invoke notifications but nothing worked.

Afterwards I tried reconnecting the project to the Slack channel with `/jira connect` command inside the Slack channel. It reported as if the project was successfully added and that's where weirdness began.

I cannot configure Slack integration no more, it just shows a warning icon whenever I try to enter Slack integration settings either in space settings or in project directly.

Also I cannot remove and re-add the Jira integration from the Slack channel (or at least I couldn't find an easy way to do so without removing the Jira slack app entirely from Slack workspace).

Anyone encountered anything similar? Are there solutions to this? Also I noticed that when I run `/jira manage` it actually shows the same project listed twice, which makes sense because I used `/jira connect` two times in that chat in total (first time in March and then September).

Thanks in advance for any assistance

[UPDATE1]
I managed to see the configuration page one from the URL the Jira Slack integration created by repeatedly clicking on it until it worked. Then I configured notifications and tested again, but nothing. Then I was again unable to see the configuration page again. Only the warning icon.

[UPDATE2]
I uninstalled Jira app from Slack entirely, then re-installed it. Afterwards I re-added it to the Slack channel, run the connect command, shows as added. Configuration again doesn't work, same behavior as before.