Button does not open the Link

Hi there,

I need your help. Ive included a pricing table with paypal links behind the buttons and it doesnt work on my website.

There are two ways to reach my website:

On the one hand, via a sub-level domain of my hoster and below that, the buttons are working very well.

On the other hand, via a top level domain (frame-redirected to the sub domain (user will not see the subdomain e.g. “www.wordpress.xxXX.com/support/plugin/…” to “www.wordpress.org”)).

In this case, the buttons are not working, when I click them.
They are doing neither open a new site nor changing anything in the address field of the browser.

Do you have an idea?

Best,

T.

https://wordpress.org/plugins/easy-pricing-tables/