The Life & Residence certificate only says that you live in a certain address, it has nothing to do with tax residency. I never had any problems opening bank accounts in Paraguay and abroad (including the US), offshore companies, brokerage accounts︀ and crypto-exchange accounts using the LR certificate in conjunction with the national ID.
The certificate︁ is issued with a validity of 3 months (if you need a new one, just︂ ask your agent).
As for tax residency, it's mostly self-declaratory and you can tick the︃ "Country doesn't mandate citizens to have a TIN" checkbox. If you don't spend 183 days︄ in Paraguay, still, who can claim you aren't a tax resident there if you are︅ not living permanently elsewhere? And if you happen to be living permanently elsewhere - how︆ would your bank report to that jurisdiction anyway?