Hi!
How did you donated?
Via external PayPal Website:
Please send me your PayPal Login mail address and i will reset your code.
Via Google Play App "COL Reminder Donate":
COL Reminder Donate app is a very old app and was made earlier for donation until Google has added the in app purchase.
Sadly Google has made again some restrictions and COL Reminder Donate, because it is very old, can't be installed anymore on newer phones :-(
So we have now 2 options:
I send you a code and you can unlock all features. The downside is that I need to reset this code every time you reinstall COL Reminder or after you have a new phone.
You can pay the smallest donation inside the app and it is connected to your Google account. If you have a new phone or you make an reinstall the purchase is automatically restored.
Let me know if you want the code or you are doing a second donation.
Best Regards
Christian