Hey. Home user here. I have a SURF SOHO MK3 and have always had connectivity problems with my apple ipads/ iphones after upgrading the firmware. I found that after upgrading the firmware, doing a factory reset and then reconfiguring from scratch would always solve the problem.
Sidenote: I believe I traced the problem to the Client Signal Strength Threshold on the AP page under SETTINGS. It should be set to 0 - 10 (-85db) to easily allow clients to connect initially. I suspect that setting may get corrupted on upgrade but haven’t fully tested that hypothesis. I usually have it up around 50 (-45db).
If at that point you are still having connectivity problems I would check the AP menu, SETTINGS and set CHANNEL to AUTO. That way if its a noisy crowded WiFi neighborhood the SURF will hop around to clear channels automatically.
Like Michael234 said you could also use a WiFi analyzer to see if the SURF is broadcasting your networks and to check how congested the airwaves are. Look for an unused or less busy channel in the 5Ghz spectrum.
Lastly and this is a long shot but I found that iphones and ipads (ios 12-13) will share WiFi network passwords amongst themselves if Bluetooth is turned on (not sure about mac books) and connect to WiFi networks in your contact list. The feature is called “Family Sharing” and I believe is rolled into Bluetooth file sharing, airdrop, handoff, and carplay. Under general settings on your iPhone you could turn those features off in addition to turning off Bluetooth when not in use.
Bear in mind there is no specific user setting for “family sharing” its just built into those Bluetooth services. Sometimes this will piss off the router or client if you have really high security settings like MACS whitelisted or really tiny 1 or 2 slot subnets. Again this is a real longshot but I saw it on the SURF’s STATUS, CLIENT LIST page and verified with KISMET when I was monitoring my VLANS and thought it was pretty funny / concerning from a security standpoint. ie: I had created multiple WiFi networks / VLANS to isolate different clients and they all started jumping over to other networks with no apparent explanation completely defeating the purpose of isolated VLANS. Family sharing is not a feature I wanted nor asked for. Turning Bluetooth and associated services off solved it.
Since bluetooth might share the same 2.4Ghz radio as WiFi in addition to unwanted features like “family sharing” I just turn it off during initial connection attempts. Then reset the iPhone or ipad’s network settings and just create a new network / password and it was good to go. This is where the SURF really shines as that is so easy to do and you can isolate devices on their own VLAN / network so it doesn’t interrupt other users networks. One feature I really like about the SURF is that changing 2.4Ghz network settings and saving the changes does not interfere with the 5Ghz networks and vice versa. Comes in handy for testing things without interrupting other users.
One other funny thing I saw with the iPads/iPhones: my wife would often have up to 25 windows / applications open on her iPad and it would not connect to a new network because it was basically out of RAM at that point. At the time I did not know you could double click the home key to show all the open applications - so I couldn’t figure out why it wouldn’t connect. Close all apps and / or reboot the ipad/iphone before attempting to connect to a network if you are having problems. To save time and avoid frustration, attempt initial connections with a small easy to type password to verify that it works before investing the time it takes to pound out 45 digit passwords multiple times on the error prone ipad/iPhone ghosted multi-keyboard interface.