been that way for a long time...
x10hosting is currently changing - updating for along while now - their program (plans and software) to upgrade free-hosting accounts
you can NOT pay to upgrade your free-hosting account to [ Prime ] or [ Illuminated ] - or pay to renew your current upgrade until x10hosting sets the 'new' software
which may not include the current [ Prime ] or [ Illuminated ] upgrades - there is currently no information about when or if they will be available and what they may look like when they are available.
for latest (June 6, 2016) update see --> [
https://x10hosting.com/community/threads/updates.200554/ ]