Hi there, @BreadandButter 👋 Thanks for taking the time to reach out to us here on the Seller Community! So happy that you joined us. Hopefully this space can prove to be a valuable resource as you look for creative solutions for your business.
Item integration to the Online Store is dependent upon the size of your item library as well as some other external factors such as browser version and even strength of internet connection. Are you receiving any kind of error message when trying to move your items over to the Online Store?
If the issues persists, it may be a good idea to flag this over to our Support Team. They can take a deeper look into your setup and determine if anything is off.
Feel free to shoot me back a response! I will keep an eye out - I want to make sure this gets resolved for you.