opnsense + wireguard peer generator QR code on android8

[ASD]

Hi,
had setup fresh opnsense and wireguard.
if i manualy configure a peer for example on windows and copy the config with .zip file to my little old android 8 i can connect and it works like expected.
but if i use the peer generator and scan the QR code it ask with a popup: original text:
Tunnel aus QR-Code importieren
buttons: Abbrechen / Tunnel erstellen
translated text:
import tunnel from QR code
buttons: cancel / create tunnel
then I press create tunnel nothing happens... the popup disappears and no tunnel get created also no errormessage. the log from the app is useless as its just spamming all the time things like:

05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f1303d9, entry index(985) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f130335, entry index(821) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f130346, entry index(838) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f13031e, entry index(798) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f13039a, entry index(922) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f130207, entry index(519) is beyond type entryCount(219)
05-02 19:01:48.418 20953 20953 W ResourceType: For resource 0x7f130208, entry index(520) is beyond type entryCount(219)

someone ideas what's going one here?