This is a major update, meaning your config WILL BREAK I'm sorry about this but it's sadly necessary. future updates will be self-correcting
This means you have to regen your config and redo your settings based on the new format.
To do this, rename the BlueShop folder BlueShop_Old or similar and restart your server. this will create a new folder with correct files.

Changes:

• Updated to support 1.15.x (older versions will be tested later)
• Redid placeholders to match placeholder format of other plugins %price% instead of [PRICE]
• All settings now load into memory giving way better performance
• Redid shop handling to be more dynamic and optimized
• Added option to write /bs set 5/64 which sets the sign to "$5 per stack"
• Added option to write <price>/<amount> on sign to make it format like so: ex: writing 5/64 will write "$5 per stack" on the sign and adjust the price accordingly in the menu writing any other amount, ex 5/32 will display "$5 for 32" or if it's 1, it'll display $5
• Removed unused placeholders
• Renamed some config settings to be more logical
• Fixed buy max button buying more than you had space for
• Fixed sell-all for custom items
• Improved display of custom items
• Improved help printouts
• Added tab completion to commands and the set/del-custom commands
• Improved performance
• Improved error handling

New command:
/blueshop set <price>/<amount>
will set the price based on the amount, ex
/bs set 5/64 will set the price to $5 per stack

Also, please use this new discord channel for support, updates, and discussions: Post proof of purchase under the #request-buyer channel
https://discord.gg/NCCkQcK