Hi, i have just set up latest thunderbird with multiple email accounts for hotmail, gmail, sky, tiscali and not all will recieve emails, what am i doing wrong ?

i have set these up with the automatic detection of servers etc and all are ok. this is on a WINDOWS 10 new laptop- any problem there? isp is BT is problem to many accounts? is there a ssafe limit? thanks for nay help i am new to thunderbird but it seems easier then win office outlook 2016!!