Cannot disable arrows in Insert and Restrict them in other

[HubiBoar]

this is my setup. I want arrows to be restricted in all of the modes except Insert where arrows should be disabled.
This doesnt work and arrows are disabled in every mode.

        require("hardtime").setup(
        {
            disabled_keys =
            {
                ["<Up>"]    = { "i" },
                ["<Down>"]  = { "i" },
                ["<Left>"]  = { "i" },
                ["<Right>"] = { "i" },
            },

            restricted_keys =
            {
                ["<Up>"]    = { "" },
                ["<Down>"]  = { "" },
                ["<Left>"]  = { "" },
                ["<Right>"] = { "" },
            },
        })

Also on another note, I tried to restrict arrows in Insert and this didnt do anything (they are restricted in normal but not in Insert)

        require("hardtime").setup(
        {
            disabled_keys =
            {
                ["<Up>"]    = { },
                ["<Down>"]  = { },
                ["<Left>"]  = { },
                ["<Right>"] = { },
            },
            restricted_keys =
            {
                ["<Up>"]    = { "", "i" },
                ["<Down>"]  = { "" , "i" },
                ["<Left>"]  = { "" , "i"},
                ["<Right>"] = { "" , "i"},
            },
        })

[m4xshen]

Hi @HubiBoar, hardtime.nvim currently doesn't support restricted_keys in insert mode. I'll try to implement this in the future!