Try enabling diagnostic logging on PC Monitor (open PC Monitor Manager app -> Settings -> Diagnostics -> Enable Diagnostic Logging), suspend your computer, wait for a minute, wake your computer, wait for it to suspend again, wake the computer one more time and now copy and paste the contents of the trace.log file from PC Monitor's installation directory.
Also try checking the Application and System event logs to see if there are any relevant log entries that may help understand what's causing the computer to enter a suspended state for the second time.