Mine works.
In my control2.py there is a line that says DefaultAppVer = '2200'
What does yours say?
Also in your sites.dat, in the Fidelity descriptor is there a value in the
appver : line?
I am not saying this is the problem. You may find a clue in the Fidelity*.ofx file in the xfr folder. However reading OFX files is not so easy if you have not done it.