Looks for me like its not superchkout problem at all even if it stucks at 80%. It happens so because module uses worng SMTP credentials. After testing mail function i got long time awaiting and error at sendind at last. If your server supposrts it use mail() function as function for email delivering.
Edit History
Looks for me like its not superchkout problem at all even if it stucks at 80%. It happens so because module uses worng SMTP credentials. After testing mail function i got long time awaiting at error at sendind at last. If your server supposrts it use mail() function as function for email delivering.