Basic level TradingView users are only allowed up to (1) alert per chart. There are tiered plans with TradingView that provide more alerts:
RIGHT CLICK ON YOUR MOUSE/TRACK PAD -> ADD ALERT
SELECT CONDITION "SPICE ALGO V3.0" ->
SELECT BUY + SELL ALERT
Use the desired settings of notification upon bar code, only once, once per bar, or once per minute. You may also get notified by other actions, and design the message of the alert. (Free accounts may have limits of certain Alert Actions).
SETTING ALERTS ON MOBILE
CLICK THE ALERT MANAGEMENT BUTTON
UNDER THE MANAGE TAB, CLICK THE ALERT FUNCTION, LOCATED ON THE BOTTOM RIGHT OF THE APPLICATION.
CREATE ALERT, CHANGE CONDITION TO SPICE ALGO
OPTIMIZE ALERT: BUY OR SELL SIGNAL
You can change your alert to: Alert only once, once per bar close, once per bar, or once per minute. We recommend ONCE PER BAR CLOSE.