The add bundle option is not showing up under add new product or service

It's nice seeing a new face here in the Community space, soultrain. 

The Bundle feature in QuickBooks Online (QBO) is available in Plus and Advanced versions. Since this feature disappeared after you repeatedly accessed your account, let's check if you're using the correct subscription. 

Also, we need to ensure that we log in to the correct account.

To identify the subscription in your QBO account, follow the outlined steps: 
 

1. Go to the Gear icon. 
2. Under the Profile column, select Subscriptions and billing. 
3. Your subscription will display on the screen. 

If your subscription offers the Bundle feature, you can read Set up and track your inventory in QuickBooks Online to learn how to track and manage your inventory, including creating Bundles in QBO.  

I'll also add this guide on how to Add inventory products in QuickBooks Online to give you a glimpse of how to update your products to QuickBooks Online Plus and Advanced. 

Please don't hesitate to post here in the Community space if you have more questions about products and services in QBO. Have a wonderful day!