HELP Problem with Rovair filling a Uragan 2

I cant see any photos showing the issue, seems to be a probe issue,,, is there one of those nylon inset seals used? they can crush and block the air flow if over tightened,,, just guessing there might be a probe to foster fitting used

NEW PROBE,,, that is where i'd look for the issue
No, U2 uses regular probe, inserted from side, after removing dust plug. Not sure picture is of U2 probe but reflects what I did to use. Corroded or failed one-way valve is also possible, few drops of silicone oil (heavyweight preferred) in end of inserted fill probe overnight might loosen one-way valve. WM
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Uragan 2 doesn't require a special compressor, likely probe opening not lined up with gun or gun opening plugged. Try to fill Uragan another way, HPA handpump, tank, other compressor, with original and replacement probes, to narrow problem. WM
He was able to fill it with his other compressor but it won't fill with the Rovair doesn't make any sense.
 
I cant see any photos showing the issue, seems to be a probe issue,,, is there one of those nylon inset seals used? they can crush and block the air flow if over tightened,,, just guessing there might be a probe to foster fitting used

NEW PROBE,,, that is where i'd look for the issue
Sorry I forgot to mention he's used his other compressor to fill the U2 with no problems just don't make any sense to me.