It doesnt matter the version. Devs told you not to make a pool. XUN is not designed that way. It is not compatible with current pools. They will release a compatible code later so anyone can make their pool.
Might pay to understand how consensus works.
If a block/tx is invalid; daemon drops the block.
XUN is a cryptonote currency like any other; not detracting from its appeal, but keeping things in perspective.
Generally accepted rhythm over the past 30 years..
https://en.wikipedia.org/wiki/Software_release_life_cycle