Tide Platfom Ltd ( FRN: 900843) is not a bank, it is an e-money institution. So an money with Tide is not protected. https://www.fscs.org.uk/check-your-money-is-protected/
They are known for freezing funds indefinitely using loopholes, as well as simply closing accounts with no explanation or reason whatsoever.
Do your research before falling for this scam.