Hey there!
I could be wrong, but right now you can purchase JRNL in the Palestine Aid bundle found here: https://itch.io/b/902/indie-bundle-for-palestinian-aid. I'm pretty sure that the bundle accepts credit card payments. It's $5 which is the same price as what JRNL usually is. Plus you get hundreds of additional games, and donate to a good cause!
-Saul