USB Tethering. 1000s of emails have transferred from android to Thunderbird on laptop with no problem. From about 10:30 am this morning they suddenly stopped. I tried a test email at 2:30 pm, after switching both devices off and on again, It transferred perfectly. The emails are very important and still on my phone but not on my laptop. Please can someone suggest what might have happened and is it possible to force the transfer? I didn’t setup any email settings when changing from a router to tethering but it has always worked OK until now.