As part of my verification of data for fastcharger.info, I regularly go into the EA app to validate new sites, and almost always there are one or two stalls listed as UNAVAILABLE. Whether they are truly down or in use or not I have no idea (it doesn't seem likely because these are all brand new sites added to the app less than a few hours before I check), but the app is definitely not the perfect tool here.
In my experience (which is really small so far) the app is really glitchy, and the chargers themselves are glitchy.
One time it said a stall was UNAVAILABLE, but when I looked at the stall it was on the IDLE screen despite not car being there. I played around with putting the cable back on, but not change.
In my 7 years of supercharging I've occasionally experience bad stalls. One time it said 50% weren't working, but the site was fine. The biggest issue I've had with superchargers is it not always giving me the charge it should or suddenly stopping. Where I eventually give up and I try another stall. Or resorting to rebooting my vehicle in hopes that it will solve it.
In terms of problems per stall nothing comes close to my experiences with Diesel gas stations with my Sprinter Van. I don't know what it is, but I seem cursed with bad luck.
Sometimes its the wrong flavor diesel like biofuel diesel that my van says not to use
Sometimes its not the right blend
I can't go to Mexico because its not clear what stations have the ultra low sulfer.
Sometimes a station just feels sketchy and not to be trusted
In addition to these issues there seems to be a lot of technical issues like the card reader not work, and sometimes the gas flow is tiny. Sometimes I think they purposely mess with me with the low flow rates to make me lose my gas points by forcing me to try again.
So even Electrify America is less annoying. Of course with my Sprinter Van I usually only have to drive to another gas station with diesel, and try again.
I do plan on keeping track of issues with EA chargers, but I don't know how much charging I'll actually do at EA chargers. Rivian is coming out with their own Adventure network. They already have three operational sites in the US for L3 CCS charging for Rivians (they also have L2 charging at those sites for any EV). As they have more I'll use those first, and the EA second because free is free.