Tecplot installation issue
 

I have been using tecplot 360 R2 2014 version from very long time..But due to the covid outbreak i couldn't be able to use the software for few months. Now i am trying to open it and it is showing tecplot license issues and a pop up screen used to come when ever i open tecplot with a some random phone number.all my plots are done with the tecplot and now i am unable to open it.Pls help me to resolve this issue..