Had a similar problem. Insert video button was not showing up. Wait for it to go 100% and wait for the illuminating bars on the upper right corner of the screen to do their thing and just click post reply. It works if thats your problem too.
Promix worm casting and ocean forest in 5 gallon cloth pots
-Water day1 1/2- 2/3 strength advanced nutrients ph 5.8-6.3 RO water
-water day2 mammoth and ph balanced water RO water
Water day3 1/2 -2/3 strength advanced nutrients ph 5.8-6.3 RO water
Water day4 ez tea ph 5.8-6.3 RO
-then back to day 1 again