Welcome to the Community! Thank you for reaching out! We would be happy to take a look and see what the issue is with the fonts! What is the name of your Campaign? If you feel more comfortable, you can also email us the Campaign name at Social_support(at)constantcontact(dot)com.
Thank you for reaching out to the Community! I'm sorry to hear you are having issues with the font in your email. I would be happy to take a look into this for you!
Please email us at social_support(at)constantcontact(dot)com with your username, the name of your email campaign, and a reference to this post and we will investigate further!
Is your text’s font changing even after updating the Global Font in your campaign?
If so I apologize this is happening and would like to troubleshoot this further for you. For instance, do you have a spellcheck feature running in your browser? We have seen some cases global font selection overrides the selected font of your text when using Spell Check. In these cases we suggest using spellcheck prior to changing a block's font type. If you do not fall under this category please let us know!