OK, I had made a backup of site form one URL, and then made a new site at localhost
Now i made compete site http://hairextensions.pk/ every thing work fine but when i click confirm purhase i got erorr
INVALID ADDRESS: HAIR EXTENSIONS E-SHOP GO BACK HOME
I check it , i set the correct url at shop , what can be wrong.
Just using latest joomla and latest vm
can be template issue. please check if the same issue appears with the default Joomla template (beez or protostar)
Its even happening at default template
OHH, what i notice i am getting the same at contact form, so some thing wrong with email? what can be issue
Found solution, https://www.virtueplanet.com/forum/general-questions/22774-virtuemart-order-confirmation-page-error-after-joomla-3-5-1-update-and-solution
Please donot upgrade to 3.5.1 if you cannot update all extension that can send emails in Joomla.
So you did not bother to search this forum!!!