They said the same thing to me, but I didn't accept it because I didn't do anything wrong. I explained to them that I only have three devices: two phones and one PC.
Please explain everything to them in detail and give them some time. They haven't replied to me for like 2-3 days.
Be honest, real, and most importantly, calm and professional.
Don't worry if you didn't do anything suspicious or violate any rules; they will surely resolve it.