I have an app available on the App Store for which we had reports that people were seeing a 502 error when they tried to install.
I was able to get the same error myself when testing using the development version of our app. This was occurring intermittently a few hours ago but now appears to be working.
Was there an issue/outage recently? I see there was a similar report recently https://community.shopify.com/post/3074807
@craftybaseapp This could be due to the server issue on your end when creating and establishing the app, or the network issue on users end when installing, as servers in some areas are not so stable sometimes, you can suggest them to change into other areas and try again.
On your end, you can consider debugging the backend errors and further optimizing the app code contents, to reduce such errors continually.
I hope this reminder can give you some ideas in some way. Thank you!