All accounts are graded based on their nominal ledger entries - XS, S, M, L or XL. Accounts with 1,000+ ledger entries (that’s L or XL accounts) are required to pay £45.00 +VAT per year.
This is outlined on our pricing page here
I’ve taken a look at the account associated with your forum account, and can see that you have 1,104 ledger entries which have been created in the last 12 months. This means your account is graded as L, and has caused the notification regarding the charge.
You can however defer this for 7 days if you haven’t done so already (there’s an option on the left hand side of the payment screen), which will give you 7 days free access. In this time, I’d recommend taking a look at the following guides and checking out the ledger count, so you can see how this is broken down for your account:
Account size explained
What items make up your ledger count
How to check the size of your account
We are also able to provide a 50% discount for charities. I would just need confirmation of your account number and charity number.