Per my post here:
https://opensprinkler.com/forums/topic/instructions-for-testing-os-3-2-with-w5500-ethernet-module/#post-67408
is your controller running Jul 18 version of the W5500 firmware? If not, you should update. If you are not sure, use the test API script and check the debug (/db) API, it shows the date the firmware was compiled.
There is no 2.1.9(7) for W5500 yet — all the minor revisions from (5) to (7) are meant to address ENC28J60 and none of them has to do with W5500.