Prepare two 7.5 inch springform pans with non-stick cooking spray, wrapping aluminum foil around the bottom to protect from water seepage.
With a fork, stir together the almond flour, powdered erythritol sweetener, cinnamon, ginger, salt, and melted butter for the crust. Press the almond flour mixture into the springform pan in a flat, tight layer. Set aside.
Place a trivet in the bottom of each of the electric pressure cookers liners.
Add the minimum required amount of water according to the manufacturer’s instructions in each instant pot.
In a large bowl, beat cream cheese until soft and creamy. Add the pumpkin puree and sweeteners, continuing to beat until completely blended, about 2 minutes.
Add the eggs, one at a time, as well as the heavy cream, pie spice, cinnamon, and vanilla. Beat just until combined.
Transfer the mixture to the springform pan and spread evenly. Cover the springform pan with aluminum foil to avoid water dripping onto the cheesecake.
Cover the electric pressure cookers and set the valve to sealing. Program for manual or “pressure cook” for 35 minutes.
When the cooking cycle is complete, allow the electric pressure cookers to naturally release the pressure until the pressure pin drops. Remove the lids, press to “cancel” the “keep warm” cycle, and allow the cheesecakes to continue cooling inside the pressure cookers for 20 minutes before removing.
Replace the aluminum foil with plastic wrap and refrigerate the cheesecakes for at least 2 hours prior to serving.