Alright, so your ports are open, but it looks like there might be an issue with how the instances are being referred to. Let’s try the ampinstmgr ports
command again without the square brackets:
ampinstmgr ports ValheimI01
ampinstmgr ports Satisfactory201
Also, ensure that the instance names are exactly as they appear in AMP (case-sensitive).
Give that a shot and let me know what comes up!