Well I've been on SA for about a year now and have only met 1 pregnant lady from there.
This week has been particularly crap!!
This week I was supposed to meet 2 pregnant friends, 1 was 18 weeks and other had just found out. We were texting and everything for a week and now nothing.
Then yesterday I met a absolute stunner who was 24 weeks I was supposed to meet next Saturday and now her profile is gone on the site!
I also met another lady on the site who I was going to drive to meet and she deleted her profile as well.

Anyone else had lots of flakey women contact them and then it leads to nothing?

Maybe you've been duped. Anyone who deletes their profile is probably pretending. It happens a lot on IG. Girs pretend to be pregnant. I once followed 2 girls lsst year who are probably teens. They both got popular for being teen moms. After they announced "they had their baby" they stopped posting but messaged me a while longer. Then theor profiles were deleted.