Place the quartered potatoes in the Instant Pot®, adding enough water to cover them, along with sea salt.
Close and lock the Instant Pot® lid. Make sure the steam release handle is turned to Sealing. Press Pressure Cook, set the pressure level to High, and set the time to 10 minutes. Once done, transfer the potatoes to a bowl and let them cool.
Meanwhile, place the beans, onion, garlic, enough water to cover them, and salt in the Instant Pot®.
Close and lock the Instant Pot® lid. Make sure the steam release handle is turned to Sealing. Press Beans/Chili, set the pressure level to High, and set the time to 15 minutes.
Once done, blend just one cup of cooked beans along with the onion, garlic, one cup of the water they were cooked in, chipotle, and broth. Return the blended mixture to the cooked beans and mix well. Keep warm and set aside.
Peel the potatoes, mash them with a potato masher until puréed, and season to taste. Heat the tortillas, fill them with the mashed potatoes, roll them up to form the tacos, and spray with avocado oil.
On the Instant Vortex® control panel, press Air Fry, set the time to 10 minutes, and set the temperature to 375°F / 190°C. Press Start. Turn the tacos over when the machine prompts you.
Serve the beans with broth in a bowl. Add the tacos and toppings. Enjoy immediately.