Problem enrolling Samsung Devices to SOTI

Hello, We are trying to enroll Samsung Galaxy Xcover -devices to SOTI, but have run into problems. I'll try to explain all of our situations as well as possible, but apologies if I forget something. Anyway, the devices run on Android 11, while out SOTI client is running version 15.2. SHA-2 is enabled. First, I have tried enrolling with Android classic Mobicontrol. I found one from SOTI site, that should work. Non-ELM was seemingly not supported anymore, so I tried with ELM enabled device. There is a small problem with it, because our production network for SOTI clients do not have access to public network. In order for me complete the enrolling, I have to switch WLAN networks to a more public one during it. I was able to do this once, but subsequent enrolls fail upon completion and unenroll themselves. After that I have to do enterprise data reset in order to try enrolling again. I decided to try using the more universal Google Mobicontrol afterwards. The enrollment succeeds, but the devices do not support remote control and always install a work profile. I got some guidance from our seller, that I should enroll the device during the initial bootup, by using the camera to read a QR-code from Mobicontrol stage program. That worked on a Zebra device we have, but on Samsung device I ran into different problems. Because our production environment do not have access to Google play, I must do the initial installation on a different network, so the device gan download the Mobicontrol app. After that, the device starts to enroll, but for some reason I am unable to change settings during the installation. On Zebra device I am able to open Android during enrolling (Zebra runs on Android 8), but on Samsung I can't back out to Android during enrollment, meaning I am unable to change to production network. Is this because of a different Android version? If anyone can give me some hints about how should I proceed with enrollment, I would be very thankful.