No puedo comprar toonboom harmony pro

Hi! Is the Harmony version you aim to purchase too advanced or old for your current computer? Have you checked if the bank is blocking you from purchasing the license? Which payment option are you using? Which credit cards you attempt to use?

These are other forums with similar issue, where you may find some tips:

These are some articles where Toon Boom may address the issue:
https://desk.toonboom.com/hc/en-us/articles/360015843574-Credit-Card-Issues#:~:text=If%20you%20are%20having%20trouble,only%20accept%20Visa%20or%20MasterCard.
https://desk.toonboom.com/hc/en-us/articles/360011133414-How-to-Update-Credit-Card-Details

Otherwise, I would suggest contacting the following:
https://account.toonboom.com
sales@toonboom.com

Hope this helps!