Problem Push Notification

Hi guys, since few weeks now, my users doesn’t receive anymore push notification.
When I went on my Ionic app page, they told me to to the migrate guide.
So will I have to submit a new version on the store to get them back the push notification?

Basically, do someone else had some issue with push notification? I can’t let my users without notification just because you decided to upgrade on your side?

Many thanks
David