Constantly Freezes!

This app in theory is awesome but I have tried making an email blast 8 times in pad 40 minutes and I am soooooo done! It takes forever and it constantly freezes and wont let you do anything. If you click out of it your hard work gets erased and just when you start doing it over you get one step passed where you got last time until BAM it freezes again!!! Very disappointing!
Way faster to just use the computer!
I hope management fixes this technical issue and by the way Im using an iPhone 6.

MichelePT about Constant Contact