Hello, Firas,
It seems that the problem comes from IDs you set -> https://prnt.sc/T6j_JV8_hrEp
Because according to the option for making select on mobile ( https://prnt.sc/R5iDMQ_SFVfc ) each option of select inherits the same classes & ids as were set for tab.
For now, we disabled for you that option in Non-alchoholic and Alcoholic templates. Also we added a few line Custom CSS for better visual design ->
https://prnt.sc/GWtaRTitgS4A
We tested a few times and it works better now from our side, so please, check from yours too.
Kind Regards,
8theme team