Oscar Wong | Moment | Getty ImagesFor 15 years, former Texas schoolteacher Kayla Morris put every dollar she could save into a home for her growing family.When she and her husband sold the house last year, they stowed away the proceeds, $282,153.87, in what they thought of as a safe place — an account at the savings startup Yotta held at a real bank.Morris, like thousands of other customers, was snared in the collapse of a behind-the-scenes fintech firm called Synapse and has been locked out of ...