Depending on the type of changes you need to make you can do one of 3 things:
1. Changes that can be done in the Drag&Drop editor can be done there and then you can use the "Save As Template" option to save a new copy of your template. 2. Header logo changes or other image changes that can't be done via the editor would go through our design services team. You can reach out to them for a quote by clicking HERE. 3. Text changes to the footer, address changes, and small text-based changes like that can be done through the Support Team. Feel free to make this conversation private and send me your information, or give us a call at 1-800-595-4401 or shoot an email to firstname.lastname@example.org with those requests.
I'll go ahead and email you this information as well in case you need it there.