Every day i see people that "spam" about merkava isnt working for them: HERE THE SOLUTION (I HOPE)
The first thing to do is Download MERKAVA and
RUN IT AS ADMINISTRATOR
Normally it should work with this
If it doesnt work try these simple steps
Search "firewall" on windows and click this option
ON STEP 3 YOU HAVE TO
FIND MERKAVA.EXE
If you are using Chrome write
chrome://plugins/ in the address bar and turn off pepperflash
(red square)IF YOU CANT SEE PRESS FIRST THE
GREEN SQUARE (YOU SHOULD SEE " - " )