Firstly - you didn't say before it was dynamic content. That would have been handy to know 🙂
Ultimately, this is not a Marketo issue per se, but rather the joys of HTML coding for emails across multiple devices.
I think you need to strip styling away at this point. Keep reducing your code until the problem goes away. Start by stripping away custom fonts. Then just keep removing things. Make it simple simple simple. Then once you understand what is causing the problem, you can find a way around it.
Cheers
Jo
Thank you Jo!
I've been immersed in trying to solve other email issues.
I will try your suggestions and let you know how it goes.
Best regards,
LK