No worries.
Seems that Cynoble Technology Limited makes multiple word processing apps - 1Doc:Word Processor for Write and Ace Office: for word processing. I see their Wix website doesn't show as being setup - maybe they went out of business, since that application hasn't been updated since September 11, 2018? There is a link there for support but it goes to the same website. A search in the Internet Archive Wayback Machine does show a previous version of the website from
May 4, 2018.
They would have had to meet the requirements for the App Store before Apple would have vetted and and added the application. After that, it is on the developer to keep the links working or report any changes. I would guess that if they are now defunct, Apple will remedy the situation at some point during there review of App Store entries.
You could always contact Apple directly to report the issue with the developer website, and/or request a refund.
C