Brief.
We have fixed a bug in templates/user/block_merchants.html after release 3.0 has been issued on February, 21.
All downloads starting from February, 28 don't contain this bug.
 
Description.
There was a bug in showing the list of merchants.
 
Solution.
Please download updated version of the file from here
http://www.viart.com/downloads/block_merchants-3.0.zip
Then extract file block_merchants.html into the folder 'templates/user' of your shop replacing existing one.