Hi, I had installed thunderbird on imac computer on also on tablet ( huawei matedpad 11.5 ) I just received several emails from vitalsource.com because i forgot my password It were supposed these emails had a button. I dont see the button on th tablet but i do see the button on the same email on th imac I click on th tablet on the place the button would be, without any answer or action involved. The button were not there. How could it be?