Hello @HeidiS71095 ,
I am sorry that your mobile font is not displaying correctly within the read more block. There are two different ways to go about making this change with your email template. One, you can mimic the setup of a read more block by manually recreating using an image block with a text block next to each other and set your link to its correct destination. Secondly, you can create a whole new email selecting a Cross Platform template from the template picker and recreate the email in the Cross Platform Editor, since this has been resolved within our latest email tool. I have attached a link to a knowledge base article for you that goes over some of the improvements within this editor.