NextLink ESIM Not Working

I purchased a NextLink Europe 50 GB eSIM with a start date of 16 July and 60 days of validity, and it had been working in Germany every day without any issues until today, when I arrived near Frankfurt. At that point, the line suddenly stopped working and my iPhone began showing “No Service”. In the network selection screen, my phone can see local operators such as O2, Telekom Deutschland and Vodafone.de, but it cannot successfully register on any of them. Data roaming is enabled, the APN is set to “globaldata” as instructed, and I have already tried manual network selection and changing operators, but nothing has solved the problem. This is the first time the eSIM has stopped working. Because the line is still within its validity period and I have not used the full 50 GB, I would like my service to be restored immediately so that I can continue using data in Germany. If this cannot be fixed quickly, I request a refund for the unused portion of my package or an equivalent replacement eSIM so that I am not left without service while travelling.