There is no contact on the snap info, so I write here, maybe the creator of the snap, reads.
The version of WPS Offfice “.deb” of the official site is: “wps-office_126.96.36.19922_amd64.deb WPS Office for Linux[2019-07-05]”, the snap is stopped a little time ago “10.1.0.6757 2018-09-11”, WPS over time has released 2/3 bugfix releases and improvements.
$ snap info wps-office
summary: WPS Office Suite
WPS Office, is an office productivity suite.
WPS Office including Writer, Presentation
and Spreadsheets, is a powerful office suite, which is able to process
word file, produce wonderful slides, and analyze data as well. It is
deeply compatible with all of the latest Microsoft Office file formats.
It can easily open and read the documents created with Microsoft Office.
This is the Linux version, and it’s now a TESTING package.
Welcome to our website: http://wps-community.org
stable: 10.1.0.6757 2018-09-11 (1) 250MB -