The toilet bowl is not filling up. What is the problem?

See if your toilet has an overflow pipe. If so, a rubber tube should go into it. It has a metal clip on it and sometimes it can come loose.

Check your state and local codes before starting any project. Follow all safety precautions. Information in this document has been furnished by the North American Retail Hardware Association (NRHA) and associated contributors. Every effort has been made to ensure accuracy and safety. Neither NRHA, any contributor nor the retailer can be held responsible for damages or injuries resulting from the use of the information in this document.