BT Sport was forced to respond to a technical problem on Saturday during its first live Barclays Premier League football broadcast.
Some BT Sport viewers complained about connection problems during Liverpool v Stoke City, which kicked off at 12:45pm on August 17th.
BT Sport said "a minority" of viewers attempting to watch the game via a mobile device received the message: "Sorry we are having some temporary technical issues, please try again later".
The problem affected viewers attempting to log in to watch the match post-kick-off, BT Sport said. A spokeswoman explained that customers who logged in before the game experienced "no issues".
"Our team responded quickly and were able to make a difference so most of the customers who were experiencing problems were able to enjoy the remainder of the second half," the BT Sport representative stated.
A number of viewers complained about the problem via BT Sport's Twitter feed.
In response, BT Sport replied to a number of tweets and then issued a statement apologising for the technical problem.
All BT broadband customers are able to watch BT Sport 1, BT Sport 2 and ESPN via the app, regardless of whether they have a BT pay-TV subscription.
This is because BT Sport coverage is available for free online for BT internet users.
Broadband customers who do not have a TV subscription are required to activate BT Sport on their user account via 'My BT'.
Users need to log in, scroll down the page, click on 'BT Sport' and follow the on-screen instructions to download the app from the Apple App Store or the Google Play Store.
Customers need their BT ID to use the BT Sport app - this is the same as their 'My BT' log-in.