We have portal as the keyword, let’s split the rest into the passcode format using 2 letters for numbers

hu vxj hm portal w gq g du u

Now we need to manipulate this to try and get some written numbers. Using Rot +1 we get

iv wyk in qpsubm x hr h ev v

Numbers are using the 2nd and 3rd letters of their written form

5wyk9 portal x3h7v

Portal +1 would make 2 portal or portals

5wyk9portalsx3h7v

Let’s split into the passcode format

4 07 14 14 2 6 19 9 21 2 12

Convert numbers to letters using a=0 where needed in the prefix and suffix

4hoo2 6 t9v2m

Convert 6 to roman numeral VI

4hoo2vit9v2m

Let’s start by making pairs to see what we have

ul ar ct eb ep ov ep eb ul ar ug ug ul ov an ul ay ep eb ul eb ct un

Not really obvious at first but these are months. They are using the 2nd and 3rd letters. We then have

Jul Mar Oct Feb Sep Nov Sep Feb Jul Mar Aug Aug Jul Nov Jan Jul May Sep Feb Jul Feb Oct Jun

We know these will need to become numbers in the end so let’s try to spot the passcode format. Jul would obviously be the start of number positions

Now let’s construnct the index. We know that in Ascii, numbers are in the 50 to 57 range so July has to be 5

For some unknown reason, April seemed to have been skip in order to make everything work.

Replacing the month with these numbers we now have

52 81 79 71 52 6 6 5 90 53 71 51 84

Convert decimal to Ascii except for the keyword part 66 5

4QOG4 Z5G3T

Now for the keyword part, we have Aug Aug July. Let’s try the different pairs it would make

Aug,Aug = 66 = B

Aug,Jul = 65 = A

The only logical keyword is

Aug = august + Aug,Jul = 65 = A

Which make up the keyword Augusta

4qog4augustaz5g3t