Hello,
A part of the problem may be from the water supply. Water with minerals builds up in the percolation area pinching off the flow. You can put a cup of water, a cup of white vinegar, and about a teaspoon of Epson salts in the kettle and try cycling it. If it gets through the cycle, dump the mixture in something temporary to save. If it short cycles, try letting it cool 15-30 minutes and cycle it again. Keep in mind this mixture will not hurt anyone, but you may want to heat a couple kettles with fresh water before making anything for your significant other. That is, if it unclogs. If it doesn't, can't hurt to let it sit an hour and try again. Chemical reaction will clear it usually eventually.
Depending on the age of your kettle and the amount of water that gets on "that" plug on the bottom from filling can take its toll on the contacts. They can usually be cleaned up, buy DO NOT HAVE IT PLUGGED IN, when this is done. The base has a spring loaded bezel with the outer contacts on the outer part of the circle. Take a couple of Popsicle sticks on opposite sides to depress the cover evenly. Look around the outer ring for copper wire contact and rub it a might with a flat point jewelers screw driver (a little bit), if it looks fonky. If not, don't bother it. On the inside in the same area there's a copper tube. Look it over. It can be rubbed on the same way with your little screw driver. If the contacts look reasonable, don't mess with'em. Don't mess with those contacts at all, if the light comes on every time you press the switch down. Good Luck.