Cisco WLC N+1 HA - What happens after 90 days

If my primary WLC fails, my APs will move to the secondary WLC. All good.

I’ve heard that after 90 days, everything will continue to work but notification will begin to go out.

What if after 90 days my primary wlc is still down and my secondary reboots?

Will the secondary wlc accept the aps after rebooting?

Thanks