I’ll probably leave things as they are, to avoid unnecessary complications.
From a budgeting perspective, and being heavily involved in charity work, I understand the importance of regular income such as monthly donations.
The ITG should re-think their membership benefits, as there is currently a disincentive to donate monthly, and more than the yearly membership fee.
Either automatic membership once somebody donates the required amount, or expanding membership benefits to those donating.
I mean this as constructive criticism, nothing more.