Pedal issues

I purchased my e connect bike about 2 years ago and had not had any issues until yesterday. While taking a class the left pedal came off and noticed that the bolt had broken with a part of remaining on the crank arm. While I was able to remove the part that was left on my pedal and purchased a crank arm removal kit I called echelon to figure out the size of bolt the pedal use so that I may purchase them. Unfortunately the customer agent did not know and he said that they do not sell the replacement bolts. Does anyone know the size of the pedal bolts for the E connect X3 model? Thanks in advanced