JD Squareup purchase has errors

I have just purchased Jd squareup from you and when i upload it to joomla to replace the old squareup it says:WarningJInstaller: :Install: Can't find Joomla XML setup file.
×ErrorUnable to detect manifest file.

Dear Steven,

Thank you for submitting the question here. To install JD Squareup Cart payment plugin for Joom Donation extension, you should go to Joom Donation -> Payment Plugins to install it from there.

I hope this is useful.

Sincerely, Giang

I have purchased it and installed it on my website from the download link i got from my account. You mentioned a joom donation extension. I do not have that. I only have the squareup i purchased
Thank You
Lee

Dear Steven Foster,

JD Squareup payment plugin must be used with our Joom Donation extension. How do you want to use JD Squareup payment plugin without using our Joom Donation extension?

Sincerely, Giang

I didn't know I had to purchase something else sorry. I just read about the squareup and it led me to you. A refund would be great if possible for now and I will look further into the errors i have firstly.
Thank you

Dear Steven,

If you still want to use JD Squareup payment plugin with Joom Donation, then please submit a new ticket to Joom Donation category so we can help you.

Sincerely, Giang