Invalid Email Address Error When Trying To Integrate A Donations Button?

The paypal guide is very confusing. I want to add a donate button to my templates on my development machine for testing. The guides point to creating a donation button from their w

Solution 1:

After creating a non-hosted donation button, there should be "Remove code protection" link in the page where you get the code. Click the link and the button's code will be displayed fully in plain text. That will help you investigate more easily. Please have a try. And paste your code here if it still does not go thru.

Solution 2:

For the PayPal encrypted Donation button, it should not display below amount code.

  <input type="hidden" name="amount" value="33">

Please just use PayPal default encrypted code and do not change it. But if you want to edit the code by your own, when you create button on your PayPal account, please do not check the option of "Save button at PayPal" under the column of "Step 2: Track inventory (optional)" when you create the button. Click “Remove code protection” on the right corner of the code column after you click “Create button”.