You can access the local status page as mentioned.
However, what tests have you already done? Have you tried connecting the AP to another port on your switch? Are the APs assigned a fixed IP or via DHCP? If they are receiving IP via DHCP, have you checked to see if there are still available addresses?
Can you provide more details?
I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.
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