@Vincent-TP 

Looks like the issue is still not resolved.  Here is what I see.

Both access points have rebooted in the past 24 hours on their own for some reason (no loss of power, connected to a PoE switch which shows 65 days of uptime and is on a UPS).  One is possibly not accepting clients correctly even now as it only has 7 vs 30 on the other (and the one that has 7 usually has the most clients).

Who can I contact to work on this and provide diagnostic data to?  This is clearly some issue with these EAP610 devices and I'm seeing others posting about similair issues.

A quick update for those interested.

I do have an open support ticket on this as the issue has me close to throwing out these APs and going to a competitor but I want to give TP-Link a chance to resolve.

However, the current request from them has been to remove the use of PPSK.  This would unfortunatly result in me having to establish seperate SSIDs for each VLAN (I have 4 that use PPSK today).  That process would take quite a bit of effort to reconfigured 30+ devices on the network.  Many of those required a factory reset and re-setup.  And, if this did work, that would mean a feature of the EAP610 is simply not working.

At this point, I'm waiting to hear back from tech support on my request for them to simply escalate to their engineering teams as a possible firmware bug.

Over the past 30 days, each AP has locked up or randomly rebooted at least 15 times each.

If you have EAP610 devices and use PPSK, report back if you are experiencing issues.