Hi @Anthony1718 It would help if you named the model. However flashing blue and red lights indicates connection problems. you could try unplugging both the subwoofer and the Soundbar for around a minute before trying repairing again. Another possibility is to manually pair , sometimes moving the devices closer together solves issues. some information here https://www.lifewire.com/pair-subwoofer-to-samsung-soundbar
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .
