ISA Mature & ISA w/ 2 Years Term

Hello, I opened my first ISA account on Feb-2023 (1 year term) and the second one on Oct-2023 (2 years term). There are £20,000 in both accounts for difference tax years. My questions are: 1) Because the first ISA account (tax year 2022) will mature this month, the bank said it will be transferred to a new instant ISA account. However, I have already used up all allowance in my second ISA account (tax year 2023). If the bank re-invest the amount to a new instance ISA account, then it becomes over the ISA allowance £20,000 in this tax year. Am I understand correctly? 2) My second ISA account is a 2 years term with amount £20,000, it will mature on Oct-2025. Can I open another ISA account in coming tax year (say May-2024) and put £20,000 into it? Thank you.

Hi yharryan yan,
You can open a one new cash ISA in every tax year if you want.
When the first cash ISA matures, it will be in 23/24 and can be transferred to a new ISA.
Thank you.