I have the exact problem described in this post here: https://insider.razer.com/razer-support-45/pro-click-status-light-blinking-green-what-mean-40239

Unfortunately, the thread was locked.

But yeah, the indicator light on top constantly blinks twice with a green light and it happens simultaneously with the pairing light on the underside of the mouse. The mouse is charged, the connection is fine and to stop this from happening I need to turn the mouse off and on again, but similarly to the post I linked, the problem will likely start up again later (usually after a brief period of inactivity)