[SOLVED] Unable to add text to shared document, what is wrong???

[SOLVED] Unable to add text to shared document, what is wrong???

SOLVED: I was using Midori browser. I switched to use Chromium browser as the collaborator, and wow Zoho Writer is amazing! My edits as collaborator and as owner, two separate browsers, showed all the edits in real time! Very cool!
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Having a bad initial experience with collaboration feature of Zoho writer. I shared my document with another I created. Both me and the other user are logged into the document, different browsers. My 'collaborator' (me, the second user I created and use in a different browser) is able to delete text but can not type any new text.

What is going on? This can't be the case can it, I mean if a collaborator can not add text what use is Zoho writer.