For those who are seeing this, it's mainly because of the RPC server's traffic.
Here are some measures to take if you see this.
1. Refresh the page. 50% of the problem goes away with this.
2. Remove some digits behind.
ex) 0.00135355353 => 0.001353
then try again.
3. If you are seeing NaN% on APY, it's definitely RPC server problem . Please report us your region and we'll get QuickNode corp fix the problem as soon as possible.
4. Also try https://vfat.tools/polygon/blackswap/ to do the works
