If you experience an issue with the chat and can not see any messages this might be related to your browser.
Please check with your browser's incognito/private mode if the issue is still there. If you can see the messages now the issue should be caused by old browser cache. You can delete it in your browser settings.
You still can't see any messages?
Please press CTRL+F5 in the channel with the issue and take a look if the issue is gone.
Didn't work either?
Please right-click on the chat and click on "Inspect element" or a similar option. A window should open with several tabs. Click on the "Console" tab and take a screenshot of the content.
Please send the screenshot to our support and explain your problem. We can then track what caused the issue and fix it.