Razer Deathadder Elite double-clicking

Hi, I bought my mouse on December 31, 2017, and it's a great mouse. Last week, I start noticing LMB (Left Mouse Button) double-clicks to the point where I can't use it anymore (closes 2 tabs in the browser instead of 1, can't select a single file .. etc). I've tried to reinstall Razer Synapse 2 but it didn't fix the problem then I tried Razer Synapse 3 but still the same thing. How can I fix it? I can't ask for a replacement since the warranty's ended (2 years).