Hi Greg
There are many many reasons why this is a really lousy idea..
But let me start with the big ones.
What format have you given the disk? If it is formatted NTFS it will not work.
I am guessing the drive is 5TB.. as it is showing a formatted size of 4.5TB.
So you really only have one choice.. it has to be formatted Mac OS extended journaled. (Called HFS+ for short).
The Apple OS can only read FAT32 (absolutely bog standard FAT32 not some new fangled version of it, and HFS+)
Secondly it could have issues just with disks if the unit has a pair of drives. I hope it is a single 5TB drive.
If you have a Mac or a friend has a Mac plug it into that and format the drive.
Once you do that Windows will see the drive..
And you will hit the third major problem.
To windows it is FAT32 because the airport is seen as NT server.
As you might know FAT32 has severe limitations but the main one is files cannot exceed 4GB.
There is a way around this.. using virtual disk.. see post here.
https://discussions.apple.com/thread/7634997?start=0&tstart=0
Then you will hit the Fourth major problem.. speed.
Over network a USB 2 port on a router is going to run at the speed of cold treacle.
Anyway solve the problems one at a time.. starting with formatting it HFS+.
If you need to then Map the drive it should work without too much trouble.. but I can see you are using a public IP .. which is wrong..
\\IPAddress\Drive Name
The standard IP of the airport is 10.0.1.1
The drive name is set by the airport.. and please make it really simple.. data is default in a Time Capsule and that helps. Do not use names with spaces.. it is not a valid network name. You must insert dashes..
Your airport name is also not valid.. just btw.. Greg's Airport Extreme in network jargon is gregs-airport-extreme
The apostrophe is illegal character so is left out. Apple networking copes with these things.. but windows not so well.. so let me strongly advise.. all names short, no spaces and pure alphanumerics.
Same with passwords btw.. but can be longer.. if you suffer paranoia. 😉