For the Signal bot to operate correctly on the spot market you will need two things:
Make sure that you have either a Take Profit (TP) or Stop Loss (SL) set. In that case, the bot will continue to monitor the strategy after entry and will not change its status to "Completed".
If you do not want to have Take Profit (TP) or Stop Loss (SL) , but still want to monitor your strategy, you will need to enable "Keep my position open". Otherwise, the strategy will be "Completed" right after the entry.