I don't know what to do. I had to update all my apps and and I am now locked out, it sending the code to my old number that no longer exist
Try contacting Etsy support.
Do a search here in the Forums and see if anyone else had the same issue. There may be a Jump to Solution in their post.
How to Make Your Account More Secure – Etsy Help
Did you have backup codes?
Click the contact button at the bottom of the article.