Ep T-27 syncing issue

Good evening,
I bought my Bluetooth earphones less than a month ago. Since yesterday I am having an issue with my EP T-27 when I try syncing them with my phone. I can only connect them one by one, they won’t connect together. They have always appeared as two different devices but i had no issues until then, now I can only pair one at a time. I tried following the manual instructions to no avail, so my only option is asking for help from the support.