Screenshot sent by Google after their manual review. It's the registration page from Fedilab.
https://storage.gra.cloud.ovh.net/v1/AUTH_91eb37814936490c95da7b85993cc2ff/tootfedilabapp/media_attachments/files/109/506/250/540/696/566/original/bb89b8ae0d6d8823.png