Hi, I've been using Captivate for over 10 years (Robo demo) and I too have just "lost" the timing tab/panel.
Don't ask me how, it just disappeared.
I couldn't find the word "timing" in the windows menu either.
I did however look for Windows > Workspace > Reset Classic (or Classic drop down in top right corner)
Presto! Timing tab/panel back. . .
I guess reset workspace is good if you accidentally move stuff around / undock panels etc . .
Good luck