Why can't i change from fortnightly to weekly in the pay run i was able to until this week

It's possible that your browser stored a lot of cached, which can sometimes cause behaviors like this, dot3.

We can perform some troubleshooting steps, so you can back to running the payroll. 

Here's how:

1. Open your QuickBooks Online account in an incognito or private browser. This prevents cache, or temporary internet files from being stored in your browser. 
2. Once logged in, go process the pay run and try to change the pay schedule. If it's successful, go back to your regular browser and clear the cache. This resolves any browser-related problems.

On the other hand, we can use a different browser (Firefox, Internet Explorer, or Safari) to see if we got the same situation. 

Otherwise, contact our Customer Care Team to investigate the issue further.

Here’s how you can reach out to us:

1. In your QuickBooks Online, click the Help menu in the upper-right corner.
2. On the Search tab, click an article and select Contact us at the bottom. Then, enter the details of your concern.
3. Choose how you would like to connect with them: either via Callback or Chat.

Please check this article for our support hours: Get help with QuickBooks products and services.

The Community is open 24/7 for any other questions or concerns you have. Thanks.