As in title; any suggestions or updates?

There is no product called a "hap ax". What exists:

• hAP ax lite and its LTE sister;
• hAP ax²; and
• hAP ax³

Which one do you mean?

I'm going to guess one of the two "lite" versions, because that gives a simple solution: there is no 5GHz radio inside them at all. Check the specs on the page linked above.

i've tried to add comment regarding topic viewtopic.php?t=203190 but it seems something went wrong.
problem related to cap ax

I split the topic because what you wrote was what's in this thread's title, "hap ax" not "cap ax". (I copy-pasted it without change.) I therefore considered it a distinct topic, not "the same problem" as is often claimed.

Instead of bumping that topic again without adding any new information, try all of the solutions given up-thread and report the results of your attempts so that others can help you with information specific to your situation. You should not assume that you have the "same problem" as someone else merely based on the thread title. You might well have the same symptom but a different cause.