Problems with API. Please Advise.

Since a week I have a problem with the API to my bookkeeping programm (Acumulus).
The support of Acumulus investigated this issue. They say this is caused by a technical problem in Lightspeed or datafeed.
"Acumulus tries to reach https://api.webshopapp.com/nl/orders/200152810.json. This refers to customer 148306959. However, https://api.webshopapp.com/nl/customers/148306959.json gives an error:
{
"error": {
"code": 404,
"method": "READ",
"request": "/nl/customers/148306959.json",
"message": "No customer with that ID found."
}
}
No customer, but there is an order. Acumulus stops.
I have no technical skills. Please can someone advice?
Regards,
Marcel
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