Magento 2.2.x support from Magento has come to an end as of the end of September.
It is highly recommended that if you’re running 2.2.x that you look into upgrading to 2.3.x as soon as possible. The benefit of the upgrade is support given for the newer versions of PHP 7.2+ which are more secure than their predecessors. Also if security issues are found within 2.2.x they will no longer be issuing official fixes for those.
If you are thinking of upgrading, needing an upgrade please get in touch as you may need additional module upgrades at the same time that also support the new PHP versions.
2.3.x has no end of life announcement at present.