iOS PGP Key resolve and upload failed

Mobile apps
1

Hi,
I use since few weeks em Client for iOS now.
All working expect the resolve of pgp keys via keys.openpgp.org and the keymanagement via keybook. (Proton Mail not tested)

  1. When I try to upload my key to eM-Keybook I get the error: Uploaded of public key failed. Error during communications wit eM Keybook-Server. Try later. (I try it vor over a week now :))
  2. When I try to search for a key over the service menue with an email address I get always the error: No cert found
    I tested it with email addresses where I know that they already available on keys.opengpg.org and also work e.g. with thunderbird.

Someone a idea what’s could be the Problem?