@kekhumbo not sure if this will help:
as you know , when the Ea sends an http request the EA execution is halted for the time being till it receives the response back from the server, may be this is whats causing the issue (however i doubt that)
secondly you said you want to send all 34 requests at the same time , i am afraid it wont be possible using FXdreema , because the http request block only allow 10 keys per block so there will always be a slight delay (few milliseconds) between the execution of each http request block (dependent on the time it takes to receive the response from the server)
i would recommend that you use the custom mql block to send all 34 requests from the EA at the same time.
what server are you using ? the issue could be at the server end maybe its not sending the response back to a particular request (just a thought)