Why in your button URL do you have such weird address? yuo suppose to add just #donate as the URL.
<a class="smbutton-red commission-rating-total-container purchasable-tooltip" href="https://www.deviantart.com/users/login?ref=https%3A%2F%2Fwww.deviantart.com%2Fadrianecasini"><span> Click Here to Support Me</span></a>
should be -> <a class="smbutton-red commission-rating-total-container purchasable-tooltip" href="#donate"><span> Click Here to Support Me</span></a>
and then you also need to add additional "donate" in the button type, so:
<a class="smbutton-red commission-rating-total-container purchasable-tooltip donate" href="#donate"><span> Click Here to Support Me</span></a>
This should work in THEORY, but I didn't tested the tooltip buttons with this code. The ones I have used in tutorial works for sure and have different sies, too.