Hey gorsacv... I think you may be experencing the issue outlined HERE. This issue was supposed to be resolved in 3.5.2... but it unfortunatly was not. By rolling back the AP to 3.4.1 (or earlier) on the AP you can resolve this issue. The clients can be any version (3.5.2 is fine to put on clients). This is an AP issue. Please open a support ticket with Cambium regarding this to keep pressure on them to resolve this issue. Thank you.