Erro na integração com API NOVA

Estou com seguinte problema com a integração da API nova

10-13-2023 @ 13:25:39 - Getting shipping cost for product code: 03050
10-13-2023 @ 13:25:39 - Token already saved in transients, returning saved token!
10-13-2023 @ 13:25:39 - Failed to fetch shipping cost: Array
(
    [response] => Array
        (
            [code] => 403
            [message] => Forbidden
        )

    [body] => {"msgs":["GTW-012: Acesso não autorizado. API restrita."],"date":"2023-10-13T13:25:39","method":"GET","path":"/preco/v1/nacional/03050"}
)

10-13-2023 @ 13:25:39 - Weight and cubage of the order: Array
(
    [weight] => 2
    [height] => 2
    [width] => 11
    [length] => 16
)

10-13-2023 @ 13:25:39 - Getting shipping cost for product code: 03085
10-13-2023 @ 13:25:39 - Token already saved in transients, returning saved token!
10-13-2023 @ 13:25:40 - Failed to fetch shipping cost: Array
(
    [response] => Array
        (
            [code] => 403
            [message] => Forbidden
        )

    [body] => {"msgs":["GTW-012: Acesso não autorizado. API restrita."],"date":"2023-10-13T13:25:40","method":"GET","path":"/preco/v1/nacional/03085"}
)

10-13-2023 @ 13:31:47 - Getting available services list from Correios API...
10-13-2023 @ 13:31:47 - Token already saved in transients, returning saved token!
10-13-2023 @ 13:31:47 - Services list generated: Array
(
    [03042] => (03042) SEDEX CONTR GRAND FORMATO TA
    [03050] => (03050) SEDEX CONTRATO AG TA
    [03069] => (03069) SEDEX CONTRATO PGTO ENTREGA TA
    [03085] => (03085) PAC CONTRATO AG TA
    [03093] => (03093) PAC CONTRATO AG PGTO ENTREGA TA
    [03107] => (03107) PAC CONTR GRAND FORMATO TA
    [04740] => (04740) SEDEX 10 TA
    [05691] => (05691) SEDEX 12 TA
    [05703] => (05703) SEDEX HOJE TA
    [42367] => (42367) COLETA PROGRAMADA TA
    [77887] => (77887) COLETA AGENDADA A VISTA
)