I have both the BaoBei Support Band and this (less expensive) belt from Amazon: https://www.amazon.com/AZMED-Maternity-Breathable-Abdominal-Support/dp/B0113WE0QS?ref_=ast_sto_dp
I actually find the Amazon belt is better for curbing round ligament pain and specifically seems to support the lowest part of my belly better. The BaoBei gives me better overall support (it almost seems like compression wear and really keeps everything in place) but I still get round ligament pain when running. So, I'm more inclined to wear the cheaper belt while out running and the BaoBei for just normal everyday activity (walking, cleaning, cooking, taking care of the dog). But since these things get sweaty and I sometimes slack on washing them, I do like having two and I'll grab whichever one is clean in a pinch.
Do you have a link to the belt you got? It's possible it's just not a very good belt, or possibly not a good fit for you. I got this one and it's pretty good for me, but doesn't seem to help everyone. Also, it's lousy for sitting down, makes me need to pee even more, and only helps about 15%.
I got mine from Amazon. It has helped me with the pressure.
https://www.amazon.com/dp/B0113WE0QS?ref=ppx_pop_mob_ap_share