Code #1

Observations

Round and round we go

Make a 3×5 grid going in a spiral pattern

Read going down from the upper left G

gtc39higgs727sx

Hex but you’ll need to look at a different box this time

Making pairs doesn’t appear to give a pattern but a straight convert from Hex to Base64 gives

mek3ivdifficult237ae

Convert IV to 4 from roman numeral

mek34difficult237ae

A bit easier if you use regex to find the keyword

Using the regex string ^[uizkkx32l2jzi78]{5}$ tells us the Luizi is the keyword

Make a 3×5 grid

Reorder rows as 2, 3, 1, 5, 4

kkx32luizi782jz