Hi @Rg4963 ,
Do you want to show up a "Thank you" Pop-up box after you press the "Save" button before navigating to another page?
Do you use a Edit form to collect user's input?
I assume that you used a Edit form to collect user's input, is it true? I think a dialog Pop-up box could achieve your needs. have made a test on my side, please take a try with the following workaround:
Set the OnSelect property of the "Submit" button to following formula:
SubmitForm(EditForm1);
Set(ShowPopUp, true)
Set the OnSuccess property of the Edit form to following:
Set(ShowPopUp, false) /* <-- add this formula */
Set the Visible property of the Pop-up box to following:
If(ShowPopUp, true, false)
Please check and see if the following blog would help in your scenario:
https://powerusers.microsoft.com/t5/PowerApps-Community-Blog/How-to-build-a-Message-Box/ba-p/30624
https://powerapps.microsoft.com/en-us/blog/creating-dialogs-in-powerapps/
Best regards,