Hey @andrew42, sorry for the trouble! It looks like you might be using our Text Only template, which is more basic in terms of styling. I'd recommend creating a new template and adding whatever styling you'd like. We have a guide on our visual template editor here: The Visual Email Template Editor57
Once your new template is created, you can select it as your default from the templates page44 in your account, by clicking the 'Use this template' button that will show up underneath it (and all of your account's incentive emails will use your default template).
If you continue to have styling trouble after that, please feel free to reach out to our team at firstname.lastname@example.org (or via the in-app messenger in your account) with a description of the issue (screenshots like the ones you included here also help!). One of our Product Specialists will be able to help troubleshoot further!