Thanks for showing the interest, but unfortunately our SMS addon is compatible until SuiteCRM version 8.6. The team is working on the upgrade process. We will let you know once it is ready.
We installed new package and tested after clearing browser cache, We are not able to reproduce the issue.
Can you please reinstall & check once.
If its still reproducible, Can you please check the console if there is any error
If you can provide CRM & SSH access we would check and resolve the issue for you. You can share the details in crmsupport@brainvire.com