Welcome to Community! It's vital that you're able to access your QuickBooks Online account at any time to accomplish your daily bookkeeping tasks. I can see how this would be concerning. I'd be happy to assist!
I recommend clearing cache to increase the performance on your computer. When information is saved, it slows the functionality of your browser. Once you've cleared the cache, open your browser in private or incognito mode to sign into your QuickBooks account. I also suggest trying other browsers such as Firefox, Safar, Edge or Google Chrome.
Please reach back out if you have any other questions. We're glad to help!
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