Meal-kit service Hello Fresh has told customers here it will deliver directly from its production facility after problems following the introduction of the NI Protocol.
Hello Fresh makes weekly deliveries to households of enough ingredients to make set meals for a certain number of days.
But food products of animal origin are subject to checks as they arrive under the terms of the protocol between the EU and UK to avoid a hard border in Ireland following Brexit.
One customer has said they have had no deliveries from Hello Fresh over the last two weeks. In an email, the company told the customer: "Like many food retailers and suppliers we have experienced some disruption to our distribution into Northern Ireland due to the new requirements.
"We are working with our delivery partners to do everything we can to continue deliveries wherever possible. Whilst it is largely outside our control, we want to apologise to you, our customers, that have not received their deliveries due to these ongoing issues.
"To help improve the service and deliveries scheduled for next week, we have organised a direct delivery from our UK production facility.
"This will help mitigate further disruptions to your deliveries. We recognise the inconvenience caused."
Another customer said he had received one meal delivery over the last two weeks. He said: "Two weeks ago the delivery window kept moving a day at a time and in the end didn't come at all. Last week the delivery moved back a day twice. It looked like it wasn't going to come again and then surprisingly it did arrive."
Earlier this month the company told the Belfast Telegraph it was "in discussions with third party couriers to investigate delivery delays and are working tirelessly to resolve the situation swiftly".
Meanwhile, Dunelm has said issues hitting deliveries here have been resolved. It said it had also reached a longer-term arrangement to operate after a three-month grace period for customer parcel deliveries expires at the start of April.
But department store chain John Lewis said: "We paused deliveries and collections in Northern Ireland at the end of December while we awaited further guidance on the new trading arrangements.
"Along with our carriers, we are currently working through the complexity of the new requirements and hope to resume the service as soon as possible."