If you want to link your PayPal account to your referral account, and you see: "This PayPal account is already connected to an Aklamio account", it means that you have previously connected your PayPal account to another Aklamio account.
You may have two referral accounts and one of them is already connected to your PayPal account. So you should first disconnect the existing connection from the other referral account. You will be then able to connect your PayPal account with your second referral account. In order to remove the existing connection, please follow this article.
Please note that according to our terms and conditions §8 paragraph 11, you are not allowed to have more than just one referral account. If you have two or more referral accounts, please contact our Customer Support at firstname.lastname@example.org. We will gladly merge your two referral accounts into one.