Veering WAY into unsupported territory here.
The default chat resource has an API and theme support. It’s not meant to be replaced with random shit such as whatever you linked, or ‘paid resources’, or anything along those lines.
The default chat resource also ‘works’. You don’t have to ‘find one that works’. The default one included with the server-data repo works. Literally.
If you want to disable auto-suggestion for commands you have access to, call removeSuggestion with a delay a bit after, or properly request a change in #general-discussion:feature-requests to have a flag to disable auto-suggestion for commands.
Don’t go all into ‘i want to buy a new chat resource’.