Error: Device rejected by app

[jojuma]

Hi,

I'm not sure if this is the right place to ask, maybe it's the KDE subforum or the developer site.
On my Pinephone (KDE Community Edition) I installed Watchmate to manage and update my Pinetime.
The Pinetime is found by the app but when I try to connect it I get the error "device rejected by app".
I had Watchmate running on other distros on the Pinephone without any problems. What could be the reason for this behaviour?

Thanks!