Help How to unlock MEMO PIN?

[myboyracer]

Hi,

I accidentally lock one of my MEMO. Now I want to see this MEMO, I need to UNLOCK with a MEMO PIN? I do not remember I created any MEMO PIN for my MEMO app. How do I unlock my MEMO? How many digits does this PIN require to UNLOCK? Cheers!

 

[ruleal]

Use 1234. It works!