Can I ask the op where did he get this tablet . from what these guys are telling me you need a SIMS card to enter the tablet . this is the reason it wont read the correct or incorrect code you enter . they said if you had a sims card it would be easy to enter the I forgotten my code to set up a new one . until you get a sims card you wont have access to the tablet . this will include resetting . . so as I said you may have rooted or did something cause the tablet wont allow you to reboot or factory reset . they say its a security for the tablet . now they gave me the OK for you to contact to get a sims replacement to get back into the tablet . if you have a sims inserted remove the sims and try to factory reset this tablet without the sims inserted. First power off the tablet and then remove the sims . when removed do the pin hole as the reset if Dont work do the button combo . if all fails and you Dont have a sims you can't use WiFi to get into the settings . you will need to contact them for a repair or your account info .
http://www.simmtronics.com/xpad/tablets-2/
Post back if u need anything else