HI there.

Doing a flight from KDAB to KMIA and passing from Ground to Tower, the Tower control did not respond to multiple instances of request. 

Here is the transcript:

Simulator Connected
Recognition Engine Installed
Grammars Loaded
 Mad Dog Z K - S I M Ready to Copy IFR Clearance;
Mad Dog Z K - S I M is cleared to Kilo Mike India Alpha, fly the LAMMA7 departure , with the LAMMA transition , then direct to Tango Romeo Victor then as filed.  Expect departure runway Two Five Right.   Maintain , Niner Thousand feet . Expect higher clearances Five minutes after departure.  Departure on One Two Three Point Niner Squawk Four Three Three Three
~Mad Dog Z K - S I M is cleared to Kilo Mike India Alpha, fly the LAMMA7 departure , with the LAMMA transition , then direct to Tango Romeo Victor then as filed.   Maintain , Niner Thousand feet . Expect higher clearances Five minutes after departure.  Departure on One Two Three Point Niner Squawk Four Three Three Three
Mad Dog Z K - S I M  Readback Correct.  Altimeter Two Niner Niner Seven Contact Ground on One Two One Point Niner when ready for pushback  have a good morning
~ Altimeter Two Niner Niner Seven Ground on One Two One Point Niner Mad Dog Z K - S I M
 Mad Dog Z K - S I M Ready for Pushback;
Mad Dog Z K - S I M Pushback approved
~ Pushback approved  Mad Dog Z K - S I M
 Pushback Approved Mad Dog Z K - S I M;
 Mad Dog Z K - S I M Ready to Taxi;
Mad Dog Z K - S I M Taxi to Runway Two Five Right Via taxiways Whiskey, Whiskey Three, Echo Three, Echo, November,  Hold Short Runway One Six, and Runway Two Five Right
~ Taxi to Runway Two Five Right Via taxiways Whiskey, Whiskey Three, Echo Three, Echo, November,  Hold Short Runway One Six, and Runway Two Five Right Mad Dog Z K - S I M
 Taxi to Runway Two Five Right via Taxiways Whiskey Whiskey Three Echo Three Echo November Hold Short Runway One Six Runway Two Five Right Mad Dog Z K - S I M;
Mad Dog Z K - S I M  Clear to cross runway One Six
~Cleared to Cross Runway One Six Mad Dog Z K - S I M
 Cleared to cross Runway One Six Mad Dog Z K - S I M;
Mad Dog Z K - S I M  Contact Tower on One One Eight Point One,  enjoy your morning
~Tower on One One Eight Point One Mad Dog Z K - S I M
 Tower on One One Eight Point One Mad Dog Z K - S I M;
Cheers for any help. 

I just tried contacting Tower ad KADB on 118.1 and it worked fine.

There's nothing in the transcript after the instruction to contact tower.

If you could email me the Log File from this flight I can have a look.  Log Files are located at:

C:\Users\<UserName>\AppData\Roaming\P2A_200\Logs

where <UserName> is your PC user name

A new one is created each time you start Pilot2ATC, so you may have to look in the file to see if it's the right one.

Thanks,

Dave