Do Time Capsules still work with macOS 10.14 (Mojave)
I have an old Time Capsule that I’ve had for years.  Recently, I updated my laptop to Mojave and my Time machine backups still continue to work with the Time Capsule.  So the answer is, yes Mojave works with Time Capsules.  One thing to note is that Time Machine can only backup to HFS+ formatted disks.  So make sure that the Time Capsule disk is formatted as HFS+.  Which, I think, is its default format.