Ok. So the black plastic just at the bottom of the doors is a ventilation strip. It uses the chimney effect to draw air in and then up and out thru the top. To enhance this air flow, you’ll want to add a small fan to the top and have it sucking the air out from the top. You’ll also may also need to adjust your misting or fogging. You’ll should never fog during the day and at night, you fog only if your temps are below 68F/20c. For misting, the ideal standard is to mist for 2 minutes, twice a day - right before lights go on and off. This is usually enough hydration for most chams. If urates are looking dark or orange, you can either add a short 1 minute misting in the afternoon or add a dripper for about 15 minutes a day. Your goal humidity for daytime is between 30-50%. If even doing all of this, you are still having trouble, I suppose you could place a small fan to blow air in thru the ventilation strip. It isn’t just the high humidity that increases risks for RI, but poor ir circulation as well. I hope some of this helps.