Apparently luggage handlers strike in Spain, how to proceed with my already checked luggage?

I'm taking a flight this Friday afternoon to Spain from Berlin, I bought a round trip when I was still on Spain, and checked an extra luggage (15kg).

I came with EasyJet (had an extra luggage also), but I'm returning with Ryanair. Few days ago, I got an Urgent email by Ryanair, saying that I wouldn't be able to carry my already checked luggage because of this strike and that they are unable to do nothing against that. So now they offer me to have a second hand luggage (which I don't know if would still able to carry my pre-paid 15kg luggage as hand luggage or just another 10 kg hand luggage)

Other options they suggest me, is to travel with no checked luggage at all, and they will refund my money (this is not really an option for me since I really need a second luggage), or book another flight in a different date (Is important for me to go this day, so it's really unlikely).

So, my questions are:

• Is there any other kind of possibility of getting my checked luggage even if it's on different date? (Like if I let them put my luggage on another flight, while I go with the first scheduled and they notice me when I can pick it).

• If I just go like if I never read that mail, will they force me to leave my luggage there or just won't be able to take my flight?

I already sent them a message, but no response yet. I'm really worried about that, because I can't leave my luggage nor want to book another flight.