Quick hits disappointment

This is one of my favorite slots in the casinos but a disappointment online.
I bought an extra credits for $30.00 after going through the free credits in my first time playing. I have less than 90 credits left after my playing for an hr. Just playing the 2 minimum amounts.
My advice, do not buy extra credits.
Since the above review, I have found that whenever I get a big hit with a huge pay off, the screen closes and I lose all my credits.
Goodbye. Enough is enough!

Mytabasco about Quick Hit Slots - Vegas Casino, vv2.1.25