There don't seem to be any sitemap issues. However, the URL Crawler always gives me this message:
Your SEO crawl has timed out due to an unknown error. Please try again or contact support.
I have already submitted a ticket regarding this error here:
https://premium.wpmudev.org/forums/topic/smartcrawl-pro-smartcrawl-not-working but was told I should submit a separate ticket for each website.
I've enabled support access. Let me know if you need anything else.
Thanks and Regards,