Nextcloud Talk Android: no push notifications

I dont really know if it’s exactly the same error but put it anyway.
This morning I had this error:
“I needed to change the loglevel configuration to 0 'Debug” to see it".

Info notifications GuzzleHttp\Exception\ClientException: Client error: POST [https://push-notifications.nextcloud.com/notifications](https://push-notifications.nextcloud.com/notifications) resulted in a 400 Bad Request response:

Then I followed the discussions on that topics here:

So I did what they told me to do;

  1. Uninstall apps on mobiles
  2. Deleting data from nextcloud database:
  • DELETE FROM oc_notifications;
  • DELETE FROM oc_notifications_pushtokens;
  1. Reinstall apps
  2. And disable batterie optimisation for Androïd.

And all work again.