Hi, I need a good advice,need to reset the store

Hi and thanks a lot anticipated for your help! I need a good advice for my big problem ,first let’s tell you the problem:

june 2023: I initiate lots of checkouts to test an app ( shopcado volume discount) ,the app go in conflict with my theme and make something bad to my store

september 2023: I still didnt resolve the problem,my sales are very bad,the speedscore of my store drop from 65 to 34,all is bad.

-I really don t know what to do more to resolve this problem, I do not have an backup of my store,I ve tried to update 2 times the theme from a cleAn theme but nothing…I do not have a full back up of the store :disappointed_face: Right now im disperate,this was my only income.. :disappointed_face: Please guide me what to do? I was thinking to move the shopify store to another new account with another theme ,but If i can be able to keep this account it will be perfect..Thanks!