I need woocommerce issues with my website fixing and potential ongoing maintenance.

A couple of years ago I paid a local website designer to create a website for my sewing pattern business. I am currently having some issues with it and my website designer has said that she no longer feels she is the right person to deal with the specific technical issues I have.

My website is www.madebyjacksmum.com. (NB: if you are in the EU you will be automatically redirected to Etsy if you attempt to visit the shop, this is due to tax reasons. Customers within the EU cannot use my shop, customers outside the EU can.)

I sell mostly digital downloads and my biggest issue is the fact that if I update a file and upload it to my shop, all previous buyers can no longer access their purchase, either the old or new version. I need to be able to constantly update files.

I have a few other small issues I need help with.

I am looking for someone experienced with Wordpress, Woocommerce and Divi.