I was just about to reply to you in the other (X11) thread to let you know that attaching files of any kind is not enabled on the PureBoard-forums.
You need to upload your files/pictures to a place on the internet and then share their links on this forum.
Here are two free hosters you could use: postimage.org and file-upload.net
(note: file-upload.net can be critical for Windows users if they don't use the correct button with the cloud-picture on it)
About the login - now that's really hard to fight with the captcha more than once and being refused any success
Do you use user-scripts with your browser? Via scripts you could auto-set the input-fields and would only need to submit the login. Alike could be done with Purebasic I guess.
greets ~ Vera
addendum:
What about having your user-names and passwords in a simple textfile from where you could manually copy them and so at least prevent accidental typos? That's surely less effortful than running into those described troubles.