Flash Alert On Call - Flash 5

I love this app it lets me know on my terms when people have called or text me. The only problem is I can't limit it to flashing a certain number of time before it stops it keeps flashing until I acknowledge it when somebody text me I want to flash three sets of the number of flashes I have set when somebody calls me I wanted to do the same I don't want it to go on until I acknowledge it and this I have it set to do that but it doesn't give you an option

This app has way too many ads also I don't want to let it run in the background and in order for it to flash on my messages you have to do that that then allows them to access all of my information that's a no-go for me I'm not sure if I recommend this app or not I'll come back and give it another review in a week and let you know

But this app is not working regularly I have to go to the app everyday for setting before it work How can I do to Set it permanent?