You can get the upgrade for free. :) Send us an email here https://kokororeflections.com/contact-us/ and we'll email you a itch key or send you a new download link, whatever you prefer.
Viewing post in KR Urban Modern Tiles for RPGs comments
Thank you for your fast response! As an indie studio, we are very grateful for your tilesets and after hearing of this update to the most used tileset, we're considering restarting our biggest project from scratch. Should we ask for the download key of every other tileset we've purchased so that another issue like this doesn't arise again?