I ended up purchasing a 5v power supply module. After hooking it up to the relay board, everything worked perfectly. I would have thought the 3.3V would be enough, but I guess in my case it wasn’t. For reference, I purchased this board: https://www.amazon.com/gp/product/B00HJ6AE72/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
I hear they are a bit hit or miss, so I got a pack of 6. The first one I pulled out seems to work perfectly. Thanks again for the advice.