Are Aqua Lightning invoices and liquid addresses valid for the long term?

Use an Aqua wallet on your Android phone. As those familiar with aqua know, there is a Save money There is a wallet (on the chain) and a Expenses Wallet (liquid and lightning).

Questions, for example, if you generate a certain number of sat lightning bills lnbc653...lgr4how much is that? valid How to receive funds? Forever, like an on-chain address? What if I send someone an invoice today and they decide to pay me after 1 week/month using the same invoice? Will you get money?

The same question about liquid addresses (which do not have a specific amount of SAT tied to them) is similar. Are they valid forever like on-chain addresses?