220°C should make some dank clouds unless yours is simply defective.

Obviously, first grind your flower. Then pack it loosely.

First, I would suggest doing a whole bunch of big "cheek puffs" where you repeatedly suck-in using only your cheeks and puffing it out when your cheeks are full. Each cycle should only be like half a second. Don't actually inhale. The point is to draw the hot air over the flower repeatedly until it's really hot.

You should eventually see very obvious vapor. This could take several puffs, but it should happen. Take what you feel is an appropriate hit once you see obvious vapor. I usually count 1, 2, 3, which results in a 2-second hit. Sometimes I go to 4. It really depends on the flower. Some are well cured and hit almost immediately and do so strongly. Others take some work and a little time.

I always find the first hit is the weakest. The second and third hit are the strongest, even if not vaped again until the next day. (One oven load of flower in my vape is good for me for a couple of sessions since I'm a lightweight.)

After three good hits, it tapers off. My theory is it's because the weed got decarboxylized from the first hit and is more ready to go the second time. I mostly don't know what I'm talking about, but I've repeated this observation many times: the second hit is stronger. Like I said, I'm a lightweight when it comes to weed, so I've had to be very careful on my dosing, and I've done some "science" on it.

Just be careful. Of you do get it working vapor can be deceptively strong! You feel it much less in the throat and chest and cough almost never unless you have a high wattage vaporizer which yours doesn't appear to be.

Good luck!