Hi Cristian,
The code the button generator gives me is...
[s2Member-PayPal-Button level="1" ccaps="" desc="Bronze Member / description and pricing details here." ps="paypal" lc="" cc="GBP" dg="0" ns="1" custom="transporttravelclub.travelclubsworld.com" ta="0" tp="0" tt="D" ra="0.01" rp="1" rt="Y" rr="1" rrt="" rra="1" image="default" output="button" /]
But that leads to the ERROR: Unable to verify $_SERVER["HTTP_HOST"] message