L. Shapley Bassen, left, talks with her husband, Michael, as they stand for a photo in their home in East Greenwich, R.I., Thursday, March 11, 2021. The road to a COVID-19 shot often leads through a maze of scheduling systems: Some vaccine seekers spend days or weeks trying to book online appointments. Those who get a coveted slot can still be stymied by pages of forms or websites that slow to a crawl and crash. The technological obstacles are familiar to Bassen, a 74-year-old retired English teacher and editor. She lost track of the hours she spent making phone calls and navigating websites to get appointments for herself and her 75-year-old husband, Michael. “A lot of us don’t sleep at night worrying about whether or not we’ll be able to get in,” she said.