I've had some problems lately with my yahoo mail app

1) parts of email discussions missing from my phone. Notifications have arrived for new emails but when i click on the email it's not there and never loads. It hasnt been deleted, and when ive managed to log in on desktop, the email then shows, but still doesnt show in the mobile app

2) emails showing as sent, then 24 hours going back to the drafts box, meaning missed opportunities and wasted time

3) 'Your message did not send' notifications, then when i click to check what the problem is, the message has sent anyway

Please investigate these issues and provide an app update if required