POWR Form Builder‑Contact Form

When you fill out one of the forms you go to a 'success screen' that tells the user they have successfully completed the form. Except the content for this success page is put far far down into a page - which gives the effect of loading a blank page. I contacted the support, who eventually wrote to me and said they had to escalate this issue to a different support team - sounded promising. A week later and after me writing several times to see what the progress was, I got an email saying "there's no workaround to make the submission success message appear on top" They suggested if I know someone who can do advanced coding I could try customising the form's CSS.
We sent out the form for a few people to test, and they all reported back that the form didn't work because after submitting it they were sent to a blank page.
The app is as good as useless to us, the support very slow and didn't resolve what for us is broken functionality - so we will be deleting it and choosing another app.