I use coinatmradar.com and find the info can be way out of date. Visited a vape shop that said the machine had not been filled in 10 months and it was still showing active. The biggest issue I have is unclear fees or hidden fees by the price of bitcoin or fee plus a small charge on top. If you can pin down the prices it would be step ahead of the other sites.
Did you use the report issue button on the site?
At least here in the US with the ones I have visited, most of them have been accurate.
Considering most places charge the ATM operators to be in their shop I am surprised that it was not working for so long.
Same with the fees, if it is not what is said let whoever is providing the info know. Otherwise it just sits there being wrong.
-Dave