Airspeed and ground speed are completely independent. Wind will either increase your airspeed or decrease depending on whether you are flying into it or with it. Flying 30mph with a 10mph wind, your airspeed is 20mph. 30mph into a 10 mph wind your airspeed is 40mph. It is all relative to the airflow that your wings are experiencing.
That last I check...less wind blowning the wing = less lift
Yes because your airspeed has decreased. If you are flying into it, then the more wind blowing = increased airpseed = increased lift.