Draft Testing QR-code cause Form update failed

Hi Sadiq, I have indeed set up self-signed SSL on ODK Central and also set up CA on Android, but I still have problems.

Can you please provide a tutorial on the process of "CA signed certificate for Collect"?

Later, I read this tutorial and switched to using DuckDNS to handle it, so it can be used.

But if can use the internal Domain, for me it will be a better choice, thank you!

Thank you!