Thank you for reaching out in the Community!
So sorry you had some formatting issues in your newsletter this month. I see that template is one of the older Second-Generation editor templates. If you have been making copies of your previous newsletter template each time over the years, that can possibly cause some issues. I do see you were able to get it back to the equal columns to send out, which is great.
I would suggest recreating that newsletter template in the new Third-Generation editor to start fresh with it. That way it will be in one of the new device-responsive templates, and should be much easier to use and save you some time!
Since you are familiar with the Second Generation editor, you may also find our article about Moving from the Second Generation Editor to the Third Generation Editor quite useful.
If you have any further questions please feel free to reach out to us here. We are always happy to assist you in any way we can!
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