[SmartCrawl Pro] SEO crawl has timed out due to an unknown error. (1)

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,
Dubie