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Hi Ben, how are you?
Today I started getting this error when trying to pay for a campaign. Do you know why could it be?
The translation would be: The data does not match the character set or default encoding. For more information, contact trade.
I searched for this PayPal error and found → https://wordpress.org/support/topic/plugin-eshop-paypal-error-message-data-does-not-match-input-character-set
The message at the bottom of the page seems to be the solution.
That didn't work. I left it as it was (windows-1252).
Don't know why but changing the version of php from 5.5 to 5.6 fixed it. (i'm using a GoDaddy shared hosting).
I guess it's something to do with GoDaddy.