Thank you for reaching out in the QuickBooks Community with your question. QuickBooks Online is a comprehensive program; however, it's still a program, and occasionally you'll hit a snag. This may be as simple as clearing your cache and cookies. I can guide you through this.
Your internet browser downloads cookies into your cache every time you open a webpage. When your cache gets overloaded, it begins disrupting communication in internet-based programs like QuickBooks online.
Here are the steps for troubleshooting your internet browser:
Reset your Internet or try on another computer or device
As you complete each step, you may have to log out or back into your QuickBooks Online account and check your ability to enter a new supplier.
To provide a fuller troubleshooting session, additional information on whether or not you are getting any errors if other users are having the same issue and any steps you've tried would be helpful.
I want to see you get all the support you deserve. Take care.
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