I've no experience of your particular tablet, but, the ridiculous idea of getting rid of a defined charging socket, and making do with the data socket for charging, seems to have unearthed the big disadvantage that the data connection gets loose and starts to fail quite early on. It may well be that your cable no longer makes a guaranteed connection any more. You can often test this, to see if it is intermittently connecting, by plugging it in then pulling the cable about and seeing if it claims to connect and disconnect as you do. If so a new cable may help. Probably worth a try.