I've got a similar issue but also cannot solve it using this method.
(1) Installed Easypark V7.35.2 using sandboxed Google Play Store (with network and sensors enabled on Play, Play services, and Play services Framework)
(2) Disabled secure spawning and enabled compatibility mode on Easypark
(3) Rebooted
(4) Cleared Cache and storage from Easypark
(5) Gave Easypark all permissions (at first only network & precise location, and additionally when that didn't work all the others it requested, such as nearby devices, contacts, etc.)
But when I try to log in it just shows a red warning underneath the email/username field which says: "check-your-connection", which is the same text I got without without any of these interventions.
Can I get some help? I'm on a pixel 8 pro with GrapheneOS buildnumber 2024062700. Could post logs if needed.