Problem upload with Sparkle

my problem is:

I want to upload my website.

The funny thing is, the first upload was in December with no problems,
and now at the End of January the program upload it for itself…
And now I want to upload the my final Page, but now the program said, no login data there…
Then I fill out the missing data.
Now the program said: mistake, about the server…(no the exact words, but in this direction)
What can I do?
I changed nothing

Screenshot about the messages your getting and about the settings will help to narrow things down. thanks.