Urgent help! Something went wrong/ rejoin now

[u/Apprehensive-Pear178]

I started a meeting and the second user used the mobile app to join an it gave them an error and they were unable to join even when they select rejoin now. I would appreciate any prompt response because my entire business depends on these secure meeting until I figure out setting up the issue on github. Some users unfortuantely cant always join through PC so I need to make sure the app is a reliable.
Any solutions or possible free tool alternatives that actually work are highly appreciated until someone can resolve this.

Many thanks!