Same issue except it hasn't resolved itself.
Same here. Also when I try to upload a replacement world same thing...
6/26/2019 This is happening to me and I need help! Yet I can't seem to FIND help. This is a PAID service, what the heck?! I spent an INSANE amount of time setting up this world for my friends only for this to happen with no solution in sight!
6/28 still happening and now I can't download either
Same issue. Wanted to put an offline copy of the realm world on another PC, can't load it due to version discrepancy, no apparent means of resolving.