Windows Server 2016 error 1864.. How to fix it?

Hello Microsoft Community,

I had this error before and after performing D2/D4 to recreate Sysvol and Netlogon folders.

https://social.technet.microsoft.com/Forums/office/cs-CZ/8f38bdaa-28d8-4546-b6b4-45f4a31dbd8d/3-replication-errors-after-performing-d2d4?forum=ws2016

I managed to recreate the folders but unfortunately the 1864 error kept accuring every 24hrs

Also I tried:

https://social.technet.microsoft.com/Forums/windows/en-US/068065fa-bfe4-452c-bd3b-aa2055a99b12/broken-dns-delegation?forum=winserverNIS

 It did not help me..

List of tests that I was advised to do:

I don't really know what to do, so if anyone may give me any directions it will be awesome.