The answer
Rent-exempt account reserves and transaction fees can affect spendable balances depending on account type and app behaviour.
What to do next
Inspect account state in Solana Explorer and leave enough SOL for fees.
Solscan explorer
This resource helps with the question, but is not presented as a commissionable partner.
Visit Solscan explorer ↗Useful research or product resource; no affiliate status assumed.RELATED PRODUCT OR SERVICE
Trezor hardware wallet
Related self-custody hardware; verify supported coins, networks and recovery standards. It cannot reverse an already compromised seed or fraudulent transfer.
Explore Trezor hardware wallet ↗Official website; affiliate programme available to apply for. No tracked link or partner approval yet.