<span style="font-size: 2px;">4dyp5aas2k0e</span>
Passcode format, numbers are off since 0 is not used in daily code format. That hint in the HTML is very important.
That font-size: 2px hint usually means to either make a 2 by x grid or could also mean Rot+2 which would bring those numbers to a valid format. Let’s try that.
We now need a substitution for CC. Knowing the different characters in the Ingress story, CC could very well be Carrie Campbell. Both are valid keywords, Carrie gave the valid passcode.
Code #2 & 3
All letters, applying different method didn’t give a lot until noticing that 2 & 3 have something in common.
[hint]#3 is the first step for #2[/hint]
After trying Atbash, ROT, Vigenere, Transposition, Morse, Playfair and a few other cipher to code #2 I got nothing. I then noticed that the Atbash of code #2 gave code #3. Can’t be coincidence.
First step: Atbash
Skip of 2
It’s hard to see at first glance but there is a code is there. Let’s split it to make it easier
ni zoz th k th n v v eldniwd gnirps
Let’s changes those to numbers, V is roman numeral for 5 and let’s reverse that last part for the keyword
9zoz3k3n5v spring dwindle
Looking up spring dwindle on wikipedia gave Colony Collapse Disorder