I tested that but the wireless device would not work as well
do you think of that the wireless hardware wold not perform properly (radio)
if the wirless hardware would not perform properly is there any way to fix it or not?
give me a debuging sulotion too please.

Post the config of the wireless interface (/interf wirel exp com) of that SXT.
How is the AP configured? Is it a Mikrotik also, or is it something else?