Can't create a video

[Milliw]

Just get an error message when hitting the "Optimize Video" button.

Samsung S10e w/ /e/OS

[pivic]

Same, but while my device seems able to go past the upload stage, it can't upload:

I've tried this on three different networks, all with the same 'Error' message; I could upload data through all three networks by using other apps.

I'm using the latest (1.0.0.13) version of the Android app on a Nothing 2a phone.