Enrollment ID works at US site, but not oversees

As title says, I have SOTI setup in the US where it has been used with Android Enterprise fairly flawlessly using an enrollment ID. We have a sister site in Italy using the same enrollment ID, but the system admin there says it keeps kicking out the enrollment with this generic message: the application (SOTI APK) is installed but when I try to Enroll the profile using the ENROLLMENT ID, I receive back every time the same error message: “installation failed, try another time or contact the system administrator” Is there something obvious I'm missing where it works for one site, but not the other? Seems odd that two sites with the same network policies, but in different countries would cause the enrollment ID to stop. Also, even weirder was it USED to work about 3-4 months ago, but when tried recently it just kicks out. I'm sure there's probably a log file I need to check, but as a relatively new person to this site and brand new to SOTI completely, I wasn't sure where to look. Our SOTI is Version: 15.3.2.1072 and we are trying to enroll Honeywell/Intermec CK75 rugged scanners (Yes, I know it's technically deprecated and replaced by the CK65, but we have a bunch on hand and want to keep them working)