What happens if Atomic Wallet shuts down?

Could you possibly elaborate on the consequences if Atomic Wallet ceases to operate? I'm particularly interested in understanding the impact it might have on my cryptocurrency holdings. Would my funds be frozen or inaccessible? Would there be any alternative means to retrieve them? Additionally, how secure are my private keys within this wallet, and would they be compromised in such a scenario? I'm eager to hear your insights on this matter as I value your expertise in the field of cryptocurrency and finance.