Sim Card does not work overseas

I recently signed up for a Tele2 Sim-Only subscription in September and it was stated that I would be able to roam within the EU. In my recent trips to Copenhagen (Denmark) and Manchester (UK), I was not able to obtain any connection to the networks there and it was shown that I had no service whatsoever. I have already tried turning on data roaming and I also checked the APN to be internet.tele2.nl

How can I resolve this issue? I have another friend that uses the same Sim Only plan and he is able to get access to the networks so I am quite confused about this and would appreciate any help I can get.