No email being received into Outlook

[#1]

For the last 2 or 3 weeks I have been having problems receiving email into my Outlook account.  First of all I noticed that emails were arriving intermittently, out of sequence and a day or two late.  Then I stopped receiving emails altogether.  People sending to me said they got a message my inbox was full.  I have deleted lots of emails and old folders.  I have tried to fix using the repair icon on my email.  I got the message:  problem connecting to server.  An encrypted connection to your mail server is not available.  Click next to attempt using an unencrypted connection.  Today I tried again and get the following message:  Task 'owletts@care4free.net' - receiving reported error (Ox80042108): 'Outlook cannot connect to your incoming (POP3) email server.  If you continue to receive this message contact your server administrator or ISP.  I have tried contacting Plusnet without success, they advise I come to this forum for help.  Anyone?  

[#2]

Can you successfully access the mail box using webmail?

[#3]

I can log in to my John Lewis webmail, but there is no mail there - one of the first things I checked.

[#4]

I was told by JL customer support yesterday that there is a problem with Plusnet's servers, and people are reporting problems with email, and they don't know when it will be fixed.  However, this has not been mentioned before.,

[#5]

That’s a different matter. Can you log into the care4free mailbox using webmail?

[#6]

There doesn't appear to be a care4free webmail, but I have logged into Madasafish (which took over care4free and was subsequently taken over by Plusnet).  There were several recent emails there, some of which were legitimate, and I have forwarded them to my gmail address, others were spam and I deleted.

[#7]

If I go into my Outlook account I get the following message "Task'owletts@care4free.net - Receiving reported error (Ox80042108): 'Outlook cannot connect to your incoming (POP3) email server.  If you continue to receive this message contact your service administrator or ISP.

[#8]

Interestingly I have received email which I can see on my tablet, but not my PC. 

When I check account settings on my Outlook a/c on my PC under server information, account type POP3 is greyed out - is that significant?