HELPP!!! Invalid Password Issue

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Yesterday on my desktop computer I started getting Invalid Password Issues when trying to Login. However, on my Laptop I have no issues logging in and connecting to Servers. I have re installed game multiple times, changed password multiple times to get rid of any numbers / caps. Ive made sure to type in notebook the password to check the keyboard? Any other ideas? Is this network issue? Both my laptop and desktop run off the same wifi.