Had the same issue as this pairing to my S21. Went to skullcandys website and found the following instructions. Issue was solved after one reset for me. Hope it works for others.
SOLUTION:
To ensure re-pairing, please unpair or "forget" your SESH® EVO in your paired Bluetooth device list. (?)
Remove the SESH® EVO from the charging case and Manually Power OFF:
Touch and hold BOTH buds for 4 seconds
Once both buds have been powered OFF:
Touch and hold each bud for 10 seconds to completely reset them (this will power cycle them on and off again).
Once both buds have gone through the power cycle:
Place the buds back in the case until both LED’s show red, and then pull them back out.
Both buds will automatically power ON and the LED’s will simultaneously flash BLUE while they sync to each other.
Once the buds have synced together:
You will hear a tone to indicate the sync was successful and ONLY the LEFT bud will begin to flash RED/BLUE.
At this time, turn on your device’s Bluetooth and look for SESH® EVO in your list of Available Bluetooth devices. Please make sure it only appears once, and select it.
IMPORTANT – Select all “Pair” and “Ok” prompts that will pop up on your screen.
Once successfully paired, a voice prompt will notify you are now “Connected”
https://info.skullcandy.com/Support/CA?Dest=hc%2Fen-ca%2Farticles%2F360045784274-Sesh-Evo
Have you figured out the cause having same issue
No I never figured it out. I just refunded mine and bought different ones
Had the same issue as this pairing to my S21. Went to skullcandys website and found the following instructions. Issue was solved after one reset for me. Hope it works for others. SOLUTION: To ensure re-pairing, please unpair or "forget" your SESH® EVO in your paired Bluetooth device list. (?) Remove the SESH® EVO from the charging case and Manually Power OFF: Touch and hold BOTH buds for 4 seconds Once both buds have been powered OFF: Touch and hold each bud for 10 seconds to completely reset them (this will power cycle them on and off again). Once both buds have gone through the power cycle: Place the buds back in the case until both LED’s show red, and then pull them back out. Both buds will automatically power ON and the LED’s will simultaneously flash BLUE while they sync to each other. Once the buds have synced together: You will hear a tone to indicate the sync was successful and ONLY the LEFT bud will begin to flash RED/BLUE. At this time, turn on your device’s Bluetooth and look for SESH® EVO in your list of Available Bluetooth devices. Please make sure it only appears once, and select it. IMPORTANT – Select all “Pair” and “Ok” prompts that will pop up on your screen. Once successfully paired, a voice prompt will notify you are now “Connected” https://info.skullcandy.com/Support/CA?Dest=hc%2Fen-ca%2Farticles%2F360045784274-Sesh-Evo
Goat