thanks for this and sorry missed your call.
if selecting paypal, and making the necessary req rselections, when you click continue the form fails and then shows the address fields (which are unneeded) which have all failed validation
for some reason, if you select sagepay and complete all the required fields then click 'continue' it seems to fail and remove the validated selection from the 'select your paractice section drop down and the checkboxes
have added a link to a video showing in the pm