PSA: The best way to show Purse.io that they should keep native BCH support is to send them your business in BCH.

Go spend some BCH at Purse.io and save 15% on Amazon, or if you have extra Amazon store credit from credit card reward points, or Mechanical Turk, or whatever, go and redeem them for BCH using Purse. The more BCH volume they have, the more attentive and supportive of the BCH community they will be.