8BitDo Pro 2 on Tekken 7

So i've been using the Pro 2 for the last few days and everything was working perfectly, however today i've run into a small problem. The select button which is used to restart during practice (select/touchpad+x on ps4) no longer works. It worked perfectly fine up until a few hours ago, and i've used the device test on the ultimate software and it looks like there's no issue there either. I have no idea what could have caused this.

Any help would be much appreciated. Thanks in advance.