Strange Issue "remote connecting to Openhab via iOS"

Hi, i have a very strange situation (maybe it is related to the recent certificate change, otherwise I have no clue)…

My Openhab works for 1+ year now in a great way…using anrdoid and iOS app. most of the time i’m at home controlling but sometimes also away in remote (not my.openhab)…going via DynDNS…

Recently I realized that remote with iOS does not work, sitemap is not showing up but searching kind of behavior…when doign the same remote with android…no issue…when doing web based GUI via remote iOS also no problem…but APP does not work remotely…certificate ignore is set. at home in private WLAN no issue.

Any idea what I could do…

Regards Norebrt
(i’m on 1.8.3)