use of partial wallet amount is not supported

Yes our plugin support partial payment. You can check the partial payment option in our plugin settings page.

i dont see any option in settings, can you tell me the navigation ? or attach a screenshot ? that will be helpful.

can you help please, i am struggling with it.

You can find the settings in Terawallet>settings>general tab. Settings lable auto deduct wallet balance.

i checked that option both with enable/disable,

enabling the option auto applies the full wallet on cart page, and disabling the option will gives you choice on cart page to apply the wallet, but it applies the full wallet, it does not give any option for partial amount.