It blocks You from doing anything for about 5 seconds and if those are last seconds to make a move it's stressful and U can't put orders or be even booted.

Does it make sense to show that there is nothing to show??????

It is pretty much a an advertisement that failed to show up properly or did not open properly and yeah it can be pretty annoying.

I know what's that but I ask for a reason for it as I see no point. It doesn't add money to Warlight and there is no ad to be paid for, so it just disturbs.