Samsung Galaxy Tab S2 won't accept Pin

[Pato]

I decided to put a pin on my tablet and it worked fine. All of a sudden it won't accept my pin and I can't open the tablet. I have googled it and it appears that this

has happened to many others. I wonder if anyone else has had this problem and can offer some suggestions.? I have rebooted it in safe mode.

When I enter the pin it just advises to try again in 30 seconds and the same thing happens.

[Pato]

It looks like no one can help. I may have to do a factory reset. is there anything I should know before I do so.?

[king1]

It looks like no one can help. I may have to do a factory reset. is there anything I should know before I do so.?

 A factory reset will only help here if you know the google account it is tied to and can sign into it after the factory reset - this is due to Factory Reset Protection (FRP) 
https://www.samsung.com/nz/support/mobil...oogle-frp/

more info on resetting 
https://support.google.com/android/answer/6088915?hl=en

[Pato]

Thanks for your help which is much appreciated.