Appen/Leapforce not responding, thinking about signing up somewhere else

Hey guys,

so I qualified for project "Trapper" over a month ago, but I still don't have any work and the support hasn't answered my email.

I've heard that Lionbridge and Appen/Leapforce don't like you using both platforms together, but what about Appen/LF + iSoftStone or Raterlabs? Are there any more companies that offer similar work?

Which one would you recommend? Lionbridge, iSS, raterlabs ... ?! Which one has the best working conditions & pay? Where are the barriers of entry (hundreds of pages for qualification exam vs. a few pages for qualifications exam) generally low / high?