problem after upgrade to 6.37.1

I have problem after upgrade my router 433AH to 6.37.1.
Problem is with AP mode (on R52Hn)
Client connect only with frequency 5180 and 5200
Clents cannot connect to AP with frequency 5500 to 5700 (country Slovakia)

Why?

lubo

…after downgrade to ros 5.26 it works.

where is the problem?

lubo

HI,
good news.
…new versions of ROS need more time for client connections to AP

Because of DFS… Most probably.