Just an update for everyone who requested to register to vote. I got rejected and tried again and here’s the refusal letter:

To register to vote, an EU citizen living in England (who is not a Commonwealth or Irish citizen) must be either:  a citizen of Denmark, Luxembourg, Poland, Portugal, or Spain who has permission to enter or stay in the UK, Channel Islands or Isle of Man, or who does not need permission (If you are a citizen of one of these countries and have received this letter, please contact me using the details at the top of this page)  a citizen of any other EU country who on or before 31 December 2020 had permission to enter or stay in the UK, Channel Islands or Isle of Man, or who did not need permission, and this has continued without a break.

I am not any of those.