Phone network stuck on LTE after switching to e-sim

Hello. I switched from using a physical Lebara sim to an esim and now whenever I use mobile internet, it is always stuck on LTE. Previously it was connecting to 4g-5g fine.

What could be the reasoning?

Have you checked Vodafone coverage for area your in if it has 5g then contact lebara support to make sure 5g enabled on back end