if you get a notification like that in (image 2) above please go to settings on your TMWhatsApp and backup your chats (See image 1 above)
Then also browse to; (INTENAL STORAGE >> ANDROID >> MEDIA >> COM.TMWHATSAPP) in your phone.
Rename the com.tmwhatsapp folder to com.tmwhatsapp2
Now uninstall TMWhatsApp but don’t allow to keep “APP DATA” if asked while uninstalling (DON’T TICK BOX)
Rename the com.tmwhatsapp2 folder back to com.tmwhatsapp
Now install the new TMWhatsApp. Click on “AGREE AND CONTINUE” and your data will automatically be restored