Hi! When I've had this issue before it usually relates to the order in which we set our

UseXEndpoints

(UseInstallerEndpoints, UseBackOfficeEndpoints, any custom ones, Etc) in our Program.cs/Startup.cs. I believe this is due to the routes in your builder context being overwritten or reset? In one instance we had to move our custom endpoint setup extension to be the first added, in another the last!