Couple things, First The trailer looks like it is nose down in the pic you posted. You need to measure along the main I-beam in front and rear. The tongue and bumper may not be installed at the same height.
Second, Your Ram has the softest rear suspension of the half ton trucks on the market and the lowest cargo capacity as well so you will need to be very careful how much weight you put in it.
Third, that is a cheap, old school hitch which would be ok if you were not towing close to or over your trucks capacity. Spend $500 on an Equal-izer 4 point hitch with built in sway control. As mentioned in one of the first posts it will be a night and day difference.
Fourth, Get weighed so you can get the tongue weight correct and as mentioned earlier, get the weight off the rear of the trailer.
If you do those things it will tow safely. If you continue with the sway you have you will likely not have a good outcome.
