Starbucks' online ordering app malfunctioned Thursday, the same day the coffee giant introduced its holiday-themed menu. 

The outage continued into Friday, triggering complaints from customers on social media who said they weren't able to pre-order drinks and avoid standing in line for two days in a row. 

Downdetector, which tracks website and app outages, collected more than 2,000 consumer complaints about the Starbucks app not working Thursday. The site received more than 2,300 reports of problems with the app Friday, too. 

Starbucks app not working

When a Starbucks customer complained on X that she couldn't use the app, the company replied that it is "currently experiencing a temporary outage of the order-ahead-and-pay feature in our app."

"We continue to welcome and serve customers in our drive-thru and in-store," Starbucks wrote from its customer service account.

By mid-morning Friday, Starbucks told CBS MoneyWatch that all functionality within the mobile app had been restored. The company did not indicate why the Starbucks app was not working.

The coffee giant's app went down in July, too, caused by a global a global Microsoft outage that roiled industries, from airlines to health care.