What are some common issues with toilet stoppers and how can they be fixed?

Common issues with toilet stoppers include leaks, clogs, and improper flushing. Leaks can be fixed by replacing the stopper or adjusting the chain length. Clogs can be cleared using a plunger or a Plumbing snake. Improper flushing may be due to a faulty flapper, which can be replaced to resolve the issue.