no network connection (Flatpak)

[Fifoxtasy]

Hi squentin and everybody else involved. Thanks for gmusicbrowser, a great program that i have enjoyed for years!
Since it's not in the standard repository of my distro (opensuse tumbleweed) anymore i installed it via flatpak. The installed version is 1.1.99.1.
My problem is that gmb doesn't have a network connection. I checked the permissions with flatseal and network access is enabled but gmb can't access any network resources (for example search pictures, transmit audioscrobbles etc.).
I tried installing through the repo download.opensuse.org/repositories/multimedia:/apps/openSUSE_Tumbleweed/ which works (version 1.1.16) but the repo is repeatedly causing problem when updating my system. So i would prefer using the flatpak version.
Do you know what's causing my problem with network access? Help will be appreciated.
Thanks for a great program
Fifoxtasy

[FabioLolix]

Maybe is better to ask on flatpak manifest page https://github.com/flathub/org.gmusicbrowser.gmusicbrowser