MEP MX is now very old and does not run successfully, if at all, under Win 10.
You should be eligible to update to the latest version (now called) Movie Studio 2022. You can find the full details on this page. Go to the bottom of the page to find details of the upgrade path, and different payment options.
In addition to @emmrecs comment - we need more information:-
What is the update being offered?
Computer specification, see this topic for what is required and please quote processor and graphics card make/model in full, and also what monitor/screen resolution(s) your are working with.
I would suggest you put this information in your profile signature so we do not have to keep asking for it.