can't add words to my vocab

Hi when I double click on a word in any chapter nothing happens. No ABC tab opens. I AM on a tablet, on chrome. How to add words to my vocab? Hilf mir bitte!

right click on the word once highlighted

Still works for me, but I'm using a PC with chrome.

Hi Ritu, thank you for your post. Unfortunately MyVocab is not optimised for mobile devices I'm sorry. We are working on a new app at the moment, and later in the year we hope to add the MyVocab feature to the app. But in the meantime, I recommend adding words to your MyVocab list using your computer. I hope this helps!