TeamViewer Personal Use Only,Sadly I Can't Use It Anymore...

Dear TeamViewer team,i use your excellent tool since version 9,always for Personal Use Only,i was using it only on two laptops,never have a problem until now...right now i was using the Official Portable version 12.0.81460,suddenly when i was about using it tonight,i get the error: Verification of your TeamViewer version failed! TeamViewer will quit for security reasons. Please reinstall Teamviewer. i am sending to you a picture about the error...you couldn't believe how i was feel when this happen,my heart just broke! i can't use my favorite software anymore! please i begging you,do something about it as soon as you can,i hope receive an email with your answer soon please,have a good day. Picture of the error: https://i.imgur.com/jJ3H6jd.jpg