https://techcrunch.com/2018/07/22/snapcashing-out/

Snapcash ended up as a way to pay adult performers for private content over Snapchat, not just a way to split bills with friends. But Snapchat will abandon the peer-to-peer payment space on August 30th. Code buried in Snapchat’s Android app includes a “Snapcash deprecation message” that displays “Snapcash will no longer be available after %s [date]”. Shutting down the feature will bring an end to Snapchat’s four-year partnership with Square to power the feature for sending people money.

Snapcash may have become more of a liability than a utility. With apps like Venmo, PayPal, Zelle, and Square Cash itself, there were plenty of other ways to pay back friends for drinks or Ubers, so Snapcash may have seen low legitimate usage. Meanwhile, a quick Twitter search for “Snapcash” surfaced plenty of offers of erotic content in exchange for payments through the feature. It may have been safer for Snapchat to ditch Snapcash than risk PR problems over its misuse.