Using the word «هدایت» instead of "forward" is quite meaningless and most people cannot understand it. I recommend the phrase «گزینه ارسال» instead of forward which means something like "sending option"

in the current applied translation "Sorry" is translated as "Unfortunately" (Unfortunately forwarding...). Also in the current applied translation "by admins" is translated as "توسط مدیران آن" instead of "توسط مدیران".
If we translate the current Persian translation back to English we'd end up with this sentence "Unfortunately forwarding messages from this group is disabled by their admins."

I added "message' before "forwarding as the translation of forwarding is very vague in Persian. I also removed an extra "its" in the translation.