Behance and too many request error

[almagest21]

Gallery-dl skips files that have already been downloaded. This checking process seems to ignore the [--sleep] flag and to cause temporary IP address blocking depending on the amount of checking.
Behance site returns the following error in such cases, and gallery-dl will not be available for download for some time.

[behance][error] HttpError: '429 Too Many Requests' for 'https://www.behance.net/gallery/xxxxxxxx/a'

When accessing to check for updates on the hosting site side, gallery-dl need to follow the [--sleep] flag or be accessed at the appropriate interval.
At least Behance's Extractor seems to need this improvement. Do you know of any other settings that could prevent this error?

[Hrxn]

Are you using a "normal" residential ISP, or are you running gallery-dl on some kind of VPS?

[almagest21]

I'm using normal residential ISP.

[Hrxn]

Okay..
Not sure, I've never encountered this before with Behance. For what it's worth, I haven't been using it recently, so I guess a site change cannot be ruled out, yet.

[almagest21]

Thanks for reply. I guess the site structure may not changed but the site seems to return error by too many skip. Perhaps they have some new limitations.