Thanks for the A2A. There is no reason to suspect a platform’s longevity unless you know something more about them. Your units will be safe as the AMC maintains the statements of account digitally.
When you look for a platform’s longevity, do probe the profile of the founders, their tenure in the Retail Consumer Fintech space, Technology Leadership. Looks or their cost structure as well as it might indicate how long they may last before they run out of steam.