Many thanks for confirming your details and clearing security.
So I've had a look at your account and it looks like your SIM was updated due to the Vodafone migration. We are currently in the process of migrating out customers from the EE network over to the Vodafone network.
I've checked your postcode in the Vodafone coverage checker, and sadly it looks like there is currently only coverage for 2G. 3G, 4G and 5G are not available in your area at the moment.
I completely appreciate it was not your choice to move to Vodafone and the frustration with now having a lack of signal, so I can allow you to leave your SIM contract if you wish without penalty and provide you with a PAC if you wish to take your number to a different provider which has better coverage in your area
Of course, we'd love for you to stay, however due to the lack of coverage and the network not being owned by us, there isn't much we can do to make any improves to the coverage.
Please do let me know how you'd like to proceed.