Hi there and welcome!
You're not alone at all - Ivy is my first WCS puppy and I'm finding it a lot tougher than I thought it would be, even having had puppies before (not WCS though!) I recently joined too and the advice here and past posts have really helped.
My girl is only 14 weeks so not sure I'm best placed to give WCS puppy advice, but I have helped raise Shetland Sheepdogs and they are VERY vocal dogs so I'll try to give some tried and tested, and failed, and tried again barking advice. What worked for one dog was ignoring the barking, no eye contact, nothing and just getting up and walking out of the room until it stops. Then going back in and saying 'good boy' and giving him a few strokes, no big fuss, but something to positively reinforce being quiet. This may not work right away but hopefully over time he will get the message that barking means you leave the room, and being quiet means praise and attention.
If this doesn't work, even after doing it quite a few times, then you could try saying 'no' in a stern voice (not yelling) as soon as the first bark happens. I know this gives them the attention they're looking for somewhat, but I found it worked with a sheltie girl who attention barked for play and dinner. This only really worked as she understood 'no' and was sensitive to being told off, so may not work with another dog. I know nowadays, people aren't keen on using negative reinforcement like this and I have been trying to train my new puppy in a positive way (work in progress...!) so know that this may not be a road you want to go down.
Sorry for not answering to the scratching/scrabbling question, not something I have experienced before but I'm sure another member will have some good advice