https://imgur.com/a/RATuojN (NAT rules for the 3 ports in question)

Three ports are configuret exactly the same way but two of them don’t work at all.

Try to find some firewall activity on end point machine. Rules are pretty simple.

Also, are you able to access to those ports internally from any connected PC? Do you have any packet match in the Mikrotik rules? You can also enable log messages for those rules and test if packets are coming and if they are being translated.