Stick around, read a couple of other threads and those limits will be lifted automatically by the forum software - it’s to keep the workload for moderators low in regards to spamming by new “users” 
For copper fills to actually pour an area, there need to be pads/tracks/vias of the same net as the filled zone is set to.
A jumper for single layer boards will have that same net on one end and a different net on the other end - thus it won’t fill that area.
A way around that - I haven’t tested it - is to connect both pins of the jumper in the schematic to that same net, no idea though if the ERC has a problem with that though.
I modified the title a bit to draw others in, who will have more experience with this kind of problem.
Via the search there came up this neat and clean solution for your problem: