Here’s the scenario that played out, I’d be interested to know if this sounds familiar to any one else:
I’d spend credits to reach out to girls and the reply rate was low to nothing. OK, I’d think, maybe it's me, there must be thousands of guys on here. Then I’d get messages from new “girls” I’d never seen before, spend the credits to reply and never hear back. There were times when I was at my desk and saw a message so I’d reply literally within seconds. Still crickets. I’d spend more credits to see if my reply had been read and most of the time it hadn’t. Coincidentally the only time I seemed to have any successful communication was when I was getting really low on credits. Surprise, surprise I might hear from a real woman and be able to respond. Until I slapped down my CC for more credits like a dopamine fuelled addict of course, then the real ladies seemed to dry up.

The only success I ever had on SB was when I was about to give up. My suspicion is that their algorithm is designed exactly this way to keep sucking cash from guys.
I found I had way more luck on a regular subscription site like SA where I could send messages to as many girls as I wanted and widen my net, with a much higher reply rate. I was on SA for less than a week and had 2 M&G’s
Just IMO of course. YMMV.