If all of your generous donations are not showing in your account when you sign up/log in to your account there is no need to worry.
Only donations made using the same email address can appear in the same account, so if you used a different email address to make a few other donations then you just need to sign up/log in with this email address also. (This alternative email address should also have received the end of financial year email from everydayhero)
You can see the donations you have made under your account by clicking 'donations'.
If you would like more help with this please see here.