Hi there,
Yes, it is because the 1 is not in the high-low range of that day → https://stocks.cafe/stock/recent/YA1B/astrea9a1+3.4400808%23?exchange=XSES
It is meant to give user a warning in case they mistakenly entered the wrong price. Since you are sure that your price is 1 then it is fine to ignore. It is simply a display warning. It will not affect anything else.
Cheers,
Evan