to update this thread from off-thread messages while closed - an auth sms is sent and can be entered with current 0.3.8 microg, but the screen will never progress.
The logcat complains still with Failed to initialize reCAPTCHA config: No Recaptcha Enterprise siteKey configured for tenant/project * and will go through
D IntegrityService: requestIntegrityToken
D IntegrityService: Running DroidGuard
D IntegrityService: requestIntegrityToken() success for us.personals
download and load some executable code from DroidguardHelper, ending up at
W LocalRequestInterceptor: Error getting App Check token; using placeholder token instead. Error: z4.n: Error returned from API. code: 403 body: App attestation failed.
I’m not sure if the enterprise recaptcha is a real dependency to or the integrity test would run anyway. One can find another microG issue with the same 403 (that received a slop patch, because bounty). The playintegrity request ran in an unlocked device, I do wonder how the App behaves in a relocked device with an attached Google Account.