QB Issue Resolution:

The performance of QuickBooks Online depends on the browser and internet speed. We can troubleshoot it to see if this behavior you’re experiencing is just a browser issue.

 

Let’s start by logging in to your QuickBooks using an incognito window. From there, check if you can open your customized forms and company settings.

 

We can also clear your browser’s cache. It’s a junk file that causes errors if the browser saves too much of it. In addition, you can access your account through another browser. I suggest Google Chrome, Mozilla Firefox, or Microsoft Edge. Just make sure they are updated.

 

Keep on posting if you have more questions. I’m always here to help.

Resolution for Issue 'Unable to open custom form styles and company setting ?' available: Yes (Solved).
Source: Intuit Community forum.

Unable to open custom form styles and company setting ?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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