Open the door of the appliance and with your palm upward, lift the inner drum gently until the weight of the outer tub comes on.
Is there a lot of movement?
Did the drum feel loose?
Press down on the bottom inside of the inner drum and rotate it 1/4 turn each way.
Is the noise there?
Does it feel or sound rough?
When you were rotating the drum, was it scuffing / rubbing?
What area of the appliance is the noise from?
When does the noise happen?
Just noticed that you said the drum is not turning now, can you expand on this please?
OK, thanks for that.
The drum shouldn't be stiff to turn.
Unplug the appliance and take the rear panel and the top off.
Take the belt off.
Is the drum still stiff to turn manually?
The most likely cause of this, is something has got between the drums.
Keep the appliance unplugged and lower the drain hose as low as possible to drain the water out into a shallow dish.
Once emptied, take the hose off the bottom of the tub.
See if you can find the item there.
If not, disconnect the wiring from the heater and remove the heater.
With a torch, look in through the heater port to see if you can find the item.
Hook it out, refit the heater and the sump hose.
Refit the belt and try the machine again.
Hope this helps
Let me know how it goes or if you need more help