RB951 via RadiusManager, Keepalive Timeout

Hello every one

I am new in forum and just starting Mikrotik

i have problem when using mikrotik hotspot to meet mobile phones and laptops, using radiusmanager as hotspot for 1Hr

my problem some phones disconnected from wireless , and re-typing the hotspot code again to surf internet, after many trying - i met the keepalive Timeout i can’t change or edit from hotspot when am changing it nothing happened still 2 Minutes

hotspot configuration

Hotspot cards period time : 1Hr
Cookies : ON
Keepalive Timeout : ON or OFF it’s the same 2 Minute alwayes from hotspot user profile after login
idle timeout : off
leasses time from DHCP : 01:30:00

Regards
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