Outages on Shopify’s e-commerce platform have been resolved, the company said late Monday, bringing to an end a daylong glitch on the annual ‘Cyber Monday’ shopping day.

Some merchants that use Shopify’s service to sell goods online said they experienced issues with checkouts through the company’s point-of-sale system.

Businesses that run on Shopify also had trouble logging into their administrative portals.

In a statement, Shopify said: ‘We had a system degradation that has now been mitigated.’

Throughout the day, business owners posted angry messages directed at the company on X, where Shopify President Harvey Finkelstein had posted ‘HAPPY CYBER MONDAY! Let’s finish strong!’ earlier in the day, with an emoji of a flexed arm.

One business, Costack Spices, based in London, replied: ‘How??? [We] cannot fulfill orders or log on,’ with three red-faced emojis. In a follow-up, the company posted, ‘This is unbelievable.’

Another user wrote, ‘@ShopifySupport I haven’t been able to access it for the last couple hours.’

Shopify replied to most users on X with the same message: ‘We are aware of an issue with Admins impacting selected stores, and are working to resolve it.’

In 2024, merchants using Shopify services recorded $11.5 billion in sales from Black Friday through Cyber Monday, the company said, with more than 76 million customers buying from businesses powered by the platform.

Shopify provides website design tools, online checkout services and digital advertising products to businesses of all sizes. The company says that millions of merchants use its services.

While Shopify’s share of Cyber Monday sales may be limited, smaller businesses that rely on the company to process their transactions may have missed out on crucial sales at the start of the all-important holiday season.

Total Cyber Monday sales are expected to be more than $53 billion, according to Salesforce.

Shopify stock ended the trading day down 5.9%.