hi, please can someone help, before I go mad...

I am using Sage 50 - and I am constantly having to sign back into Sage Drive - It might be in the middle of doing something in sage, or whilst the sales are downloading from tradebox - that I get the " Your sage access has been revoked, or company removed - I then have to sign in again... and again.... and again.... it seems to take 10-15 times to sign in (each time it says this is the sign in for 6 months etc, and I click allow) - and then I am looped back to that box... then occasionally it decides to let me in - I start the work again -   before it stops an hour or so later...

If I set a back up off, / check maintenance, you can guarantee that 1/2 way through I will look at the computer and notice it has done it again...

I am using ESET but thought I had all the exclusions in place

The internet is fine /download / upload speed fine..

The computer I am on, it the one the data is stored on , we have one computer where it is networked the only person accessing remotely is the accountant.

I have been onto help several times , and they cleared DNS things (not sure what I mean there... just know they mentioned it), and it seems to solve it for an hour or so.. 

Please help!!!!