Difficulties with wearing a device? discussion

Hi everyone I received my cage, a holy trainer type model, roughly three weeks ago. It included four rings that went from large down to small. Initially I tested the 50mm ring and it was too loose. Next up was the 45mm; the fit improved, yet I could still outsmart the device by pulling downward on the ring. Ultimately, the 40mm ring provided the best seal. Everything seemed fine for those first two weeks. I kept it on constantly, removing it every few days just to clean myself. Here is where things got tricky. I skipped wearing mine all day Sunday because of a party event. On Monday morning, I put it back on double-checking that I had selected the correct ring size. Throughout the entire day, I experienced sharp burning underneath my scrotum. Applying lubricant helped ease some discomfort. Later in the evening, as I prepared for bed, sleep became impossible due to the pain. Eventually at 2am, the burning forced me to remove it again. Yesterday, switching back to the 45mm ring brought slight relief. I suspected a one-time glitch so I put the 40mm ring back on with plenty of lube and went to bed once more. The burn returned behind my scrotum and kept me awake. I am at a loss for what to do next. My best guess is letting that spot rest and heal for several days before trying again. Perhaps I overexerted my testicles and sac during the party? I did provide service quite often. Could they be swollen from it? They don’t appear so when I look down.