"Pier 69" mission apparently not unlocked

[Frency]

Hello, guys! Thanks in advance for the time you are dedicating reading this.

I have completed every mission (except the "Zero" ones, because I red they were not necessary) and I just completed the "Ice Cold Killa" one. Howewer, for a reason I am currently not aware of, the "Pier 69" mission seems to not be unlocked, because I can't see any icon related to it on the map. So, I was wondering if actually I had to complete all the "Zero" missions as well.
have a good day guys, and, as I said, thank you in advance.

Edit 1: I have also never stolen anything from the courier everytime Caesar called me, if that can help.

[HalfOfAKebab]

I'm assuming you're the guy who had this problem on GTAForums and got it solved?

[Frency]

Correct. I solved it, guys. Thanks for reminding me. here's the link, in case someone have my same "issue": http://gtaforums.com/topic/896612-pier-69-mission-apparently-not-unlocked/ .