You now have used 2 object to act as one, this will be split up in lower resolutions and then size will get different because the width of pages changes differntly to the 2 objects because they don't have same size).

It's better to use 1 object.

Make a prtscrn of your page, add it  to a picture edit program (like irfanview, it's free)

Cut the button and text out and save it as picture. Use that in a picture object and add a link if needed.

That should work nicer.

Best Regrds