I have upgraded to 1password4 - and it shows when I open it. BUT the key is not showing in my safari browser anymore. I followed the steps to deinstall 3, but now nothing is showing up. I sent an email to agilebits and they are awesome, but it could take them two days to respond..so thought I would try here. is there an extension for 4? I didn't not see that in the instructions?? also do I need to follow these same steps on each mac. I have an air as well as imac.