Having issues allowing players to offline forceload or change the option dispite (what i think) to be the cofigurations set up. Currently using version open-parties-and-claims-forge-1.19.2-0.22.0 on the server/client.

Offline forceloading is disabled, and isnt modifyable by the players on my server.
I have added claims.forceload.offlineForceload to [server]/config/openpartiesandclaims-server.toml to the string arrays at playerConfigurablePlayerConfigOptions and opConfigurablePlayerConfigOptions.

I have also modified offlineForceload = true within [server]/config/openpartiesandclaims-default-player-config.toml.

Is there something im missing to allow players to forceload whilst offline?

Did you stop the server before editing [server]/config/openpartiesandclaims-server.toml?
Also, please use the mod's in-game UI screen to edit anything other than the main server config.

Yup, server was off, both .toml files where updated after booting server.

My understanding of [server]/config/openpartiesandclaims-default-player-config.toml is that its a default configuration for players allowing me to modify their defaults when they load, is that incorrect?

Is there a way of editing the default player config server side?

Thanks for the help :)

Yup, server was off, both .toml files where updated after booting server.

I don't think I understand this.

All "player configs" including wilderness, server claims and expired claims should be edited with the in-game UI screen that you can open with a key binding. It's set to ' by default.

Well when I modify that file to enable the option to be edited on players' clients. The option is disabled in the menu.

You're either breaking the syntax or trying to change the file while the server is running.