You did not explain what you did with the cuttings since you took them???? did you just leave them on the table?????
Procedure I use is take cuttings of firm new growth apply 0.1% IBA ()rooting hormone) stick in well drained soil & MIST>>>>> takes 20-100 days to root & bottom heat is also advised.....

I do hundred of Beautyberries, take tip cuttings, stick in sand, you can use rooting hormone or not. Tent or use mist. Give the cutting dapple shade. They may still root with fallen leaves. They are an easy rooter.