If you don't see the NINA arrows on your charts in tradingview, there are a couple of possible reasons for that:
If you had access before and now the script stopped working your Trial might be over or your subscription might be over.
In both cases contact us via @KASupport on Telegram or via email support@kikingalgo.com
In order to extend your NINA Pro subscription choose your package here
If you never had any NINA version working on your tradingview account there might be a technical error.
In this case please let us know via @KASupport on Telegram or via email support@kikingalgo.com