Recently the sandbox that I used to load my app exchange product is upgraded to summer 17 , this has become a problem for me as I am unable to load the app in to the sandbox. The app works with spring 17 sandbox. Is there a way that Salesforce can revert back to the previous version of my sandbox i.e sprint 17?
I do not want to make a change to the code now to install in Summer 17 env due to tight deadlines and inability to modify code at this point of time. Any idea how I can overcome this?