URGENT !!!!!! Problem with Testimonial Pro saving modification

i have a problem with Testimonial Pro i add new items on front end edition and save them and refresh the page i can see modification online but after a while it comes back with demo items. also in SP Page Builder - Edit Page i can't save modification in the addon it gaves me a message telling me that Avatar Width should be set : "128" or less i modified it and the button apply doesnt work anymore.