I agree with checking the outlet. However GFCI outlets can test good with a circuit checker and still be faulty. The circuit checker looks for ground, 125VAC and neutral. As a GFCI ages, they can get weak and trip easier than they should for no good reason.

You can also install a regular outlet, unless outlet is located is located within 4 feet of a water source or in a garage (code) and then install a GFI circuit breaker in the box. If outlet is using 12 gauge wire you can go with a 20 amp GFCI breaker.

I'm currently replacing every outlet and switch in a 3.5K sq ft home. Installed a GFCI in a bathroom and it did not have power and the 2 load outlets were also out. Turned out the new GFCI was defective and was tripped and could not be reset.

It was an Eaton from Lowes the homeowner bought. I was on the job hourly not bid, so it is what it is.