EDIT: now having issue putting in my 'mydslwebstats' username and validation key, It keeps saying unable to check at present?
I can't see anything this end that shows anyone is unable to access the site.
Roseway may be able to make other suggestions as he wrote DSLstats. Until then:
1) Can you see the MDWS web site okay from a browser?
2) If not, can you PM me your IP address please (you can see it at the top of the Options window once logged on)
3) Are you trying to upload to MDWS from the same IP address you can view the site from i.e. same line?
4) And what is your username please (PM me if you prefer).
Thanks