To keep things together @CARLS1976 , so as I don't have to look at someone else's thread, please can you provide a screenshot of your port forwarding rule. Also please remind me of how you have setup the IP address of the PC, is it a static address, or a DHCP reserved one?
I seem to remember that the port was allowed as TCP or UDP on the hub, but which is it TCP or UDP, as this affects testing?
Please can you confirm your exact method of testing that you are trying?
In my last post, I did ask you is Minecraft using TCP port 25565 or is it UDP port 25565, as I said this affects testing, Please can you answer this as it it is very important. Your port forwarding rule I have tested using TCP port 25565 and it works perfectly & with the way you set it up, it will also forward UDP port 25565.
However, if Minecraft uses UDP port 25565, no port checker is compatible with any UDP ports, they only work with TCP, due to the totally different session setup of TCP, in fact UDP does not setup any sessions itself, it simply sends a UDP packet from one end & couldn't care less if it reaches the distant end.
You say you have also tested on Minecraft, please can you elaborate on what you mean by this, I have no knowledge of any games, but lots of networking knowledge.