Fix error in DPD Magento 2 extension

We have this extension: [login to view URL] Developer has no more time to maintain. We have this error: [2020-10-28 10:56:20] [login to view URL]: Report ID: webapi-5f994e5457439; Message: Class \SnakeTn\DpdNetherlands\Model\RelayPoint does not exist {"exception":"[object] (Exception(code: -1): Report ID: webapi-5f994e5457439; Message: Class \\SnakeTn\\DpdNetherlands\\Model\\RelayPoint does not exist at /home/ortlieb/public_html/vendor/magento/framework/Webapi/[login to view URL], ReflectionException(code: -1): Class \\SnakeTn\\DpdNetherlands\\Model\\RelayPoint does not exist at /home/ortlieb/public_html/vendor/magento/framework/Webapi/[login to view URL])"} [] [2020-10-27 09:51:10] [login to view URL]: Report ID: webapi-5f97ed8e1b01d; Message: The "\SnakeTn\DpdNetherlands\Model\RelayPoint" parameter type is invalid. Verify the parameter and try again. {"exception":"[object] (Exception(code: 0): Report ID: webapi-5f97ed8e1b01d; Message: The \"\\SnakeTn\\DpdNetherlands\\Model\\RelayPoint\" parameter type is invalid. Verify the parameter and try again. at /home/ortlieb/public_html/vendor/magento/framework/Webapi/[login to view URL], InvalidArgumentException(code: 0): The \"\\SnakeTn\\DpdNetherlands\\Model\\RelayPoint\" parameter type is invalid. Verify the parameter and try again. at /home/ortlieb/public_html/vendor/magento/framework/Reflection/[login to view URL])"} [] Meaning we can no longer use DPD (logistics company) parcelshops. DPD has their lates instruction here: Links. • LoginService WSDL voor LIVE: [login to view URL] • ShipmentService WSDL voor LIVE: [login to view URL] • ParcelShopFinder WSDL voor LIVE: [login to view URL] • ParcelLifeCycleService WSDL voor LIVE: [login to view URL] Project is to fix error so we can choose parcelshops again in checkout on frontend. Questions? Just ask. Only experienced Magento2 developer.