You must be freaked out.

Pepper is probably terrified and might be hiding under a building or bush near your apartment.
Because your apartment is on the 2nd floor, that is an added complication.
At a minimum, leave a flier near
every front door in your building and all buildings on your block. It is also critical that fliers are put everywhere
near your apartment building.
I would notify the managers about what you are doing to get their support.
Flier saturation is the key here.
Notify the vet who is linked to Pepper's micro-chip info.
When my daughter's dog went missing, we stapled fliers with a photo, description, chipped and reward offered, on telephone polls and everywhere we could staple one on for a 3 mile radius.
Attach Pepper's fliers to market bulletin boards, coffee houses, in vet offices, notify the humane societies and public shelter ( call them daily) at the very least for a couple of weeks, maybe longer if necessary.
Don't give up...
Sending find Pepper vibes.




A reminder...
when this is resolved, be sure to remove all of the fliers.
That is another day of work but must be done.