Welcome to Web Authenticate Fixes
Check your Task Manager to see if anything suspicious is in there as long as any suspicious .exe file or anything like that.
If you see anything suspicious Right Click it and Click End Task
And then do a Scan Threat with it after the Scan is done ReBoot your PC
Then download MalwareBytes and run a Threat Scan with it aswell.
Delete every suspicious task that shows up, when its done install Synapse X v1.0.0 again.