Print Reliably

I have a brother MFC-9840CDW. When setting up this printer the first 2 tests did nothing the next 2 tests printed 50 pages of undefined text each test causing me to power down a network printer and restart it and clear the paper jams. Finally the 5th test printed and I thought I was ok. Next I clicked enable file extensions. Tried to print a simple web page from safari browser and clicked send to open print reliably app and I try to select my printer and the check mark never moved from the pdf setting. So I wasted 100 sheets of paper my drum unit and toner and finally uninstalled this unreliable app.

I just printed my first and last document on this app. It was sixteen pages long and printed on expensive paper. The "watermark" they mention is very dark letters, 1/2" high spelling out "print reliably" all the way across the paper and repeated every 1 1/2" down the page. I am used to watermarks that are dim and let the original document show through - that would be fine for a test printout. These "watermarks" completely destroy the page you're printing. Every page is totally useless. I might have sprung for the paid version but what they are doing is rude and unnecessary. There are lots of printing apps. I'll try another.

This app is temperamental works most of the time but sometimes unable to find printer Also for months there has been a red number one on the app and cannot find out why Please help Thanks