Hi,
The following Joomshaper-specific errors are posted upon checking Extensions: Update on my sites.
Update: Could not open update site #93 "SP Simple Portfolio Module", URL: http://www.joomshaper.com/updates/mod-sp-simple-portfolio.xml
Update: Could not open update site #96 "System - Helix Ultimate Framework", URL: http://www.joomshaper.com/updates/plg-system-helixultimate.xml
Update: Could not open update site #98 "shaper_helixultimate", URL: https://www.joomshaper.com/updates/shaper-helixultimate.xml
Update: Could not open update site #99 "SP Page Builder", URL: https://www.joomshaper.com/updates/com-sp-page-builder-pro-next.xml
Update: Could not open update site #101 "SP Simple Portfolio", URL: http://www.joomshaper.com/updates/com-sp-simple-portfolio.xml
Before this issue presented itself, Joomshaper was completely unreachable earlier today. No other update sites are posting errors.
Additionally, the following is posted intermittently upon attempting to connect to Joomshaper.com:

Regards.