HP TouchPad no longer able to access PlusNet e-mails.

[#1]

I have an HP touchpad tablet device which I had setup to download my mail from the PlusNet IMAP server.
After a visit to the USA, the downloading of mail has now stopped working and I have tried in vain to set it up to work again.
I am currently using the following settings:
e-mail address: <me>@<my username>.plus.com
password: <my password>
incoming mail serer: imap.plus.net
username: <my username>
password: <my password>
encryption: none
port: 143
outgoing mail server: relay.plus.net
username: <my username>
password: <my password>
port: 25

I get no mail, although webmail shows mail in my inbox. No errors reported - just nothing 
I've got the same settings on my HTC desire smartphone and that works fine.
Why do I have the problem on the HP tablet?

[#2]

Interestingly I can send e-mails from the touchpad, but not download them.
I've deleted the account  and re-set it up a number of times, but still no joy.

[#3]

and when I chnage the incoming mail server from imap.plus.net to mail.plus.net I do get an error message:
Error code 3099: Connect failed
(ETIMEDOUT) --
src/network/SocketConnection.cpp:184
but no error message when it's set to imap.plus.net

[#4]

Are you trying to pick up mail from your default mailbox or an additional mailbox where the incoming username should be 'accountusername+mailboxname' with password appropriate to that mailbox?

[#5]

I'm trying to get mail from the default account.

[#6]

Have you tried collecting mail via POP instead of IMAP? (more of out curiosity...)

[#7]

Tried that, and as described above I get:
Error code 3099: Connect failed
(ETIMEDOUT) --
src/network/SocketConnection.cpp:184
Have scoured WebOS forums and tried potential solutions including
http://forums.webosnation.com/hp-touchpad/297968-solution-email-download-errors-finally.html
but all no no avail....

[#8]

I have had same problem: sending email just stopped. For a number of months all was well. For some reason, sending ceased. I finally decided to search for plusnet related mobile settings - so pleased to find insight had flagged up the issue.
I can receive my emails OK [IMAP]: sending does not function which ever setting option I try.
Yes, I have re entered settings etc.
I use the HP Touchpad and domestic WiFi: accessing the web is fine.
gesherts

[#9]

Sorted! 
I have re-booted the Touchpad, following which my outbound emails have tested OK.
Use the 'information' icon - there's an option to re boot..
Otherwise look up HP WebOS support and follow instructions to restart.