Ive got exactly the same issue. The pen nibs dont last long before they fray. I phoned Samsung support and they didnt know what to do but submit a ticket to their parts department.
Just bought a Galaxy Tab S6 lite a few days ago and found out that there are no s pen tips replacements provided. Called the Samsung support and they said that we would have to go to the Samsung concierge to buy a tip replacement. This is very ridiculous because from my past purchases of note 10 plus and the budget Tab A8 with S pen 2019, there are replacement tips provided. What are your thoughts?
I had the same problem so I contacted samsung support via messenger and they said they are able to send me some spare nibs of needed. They just had to confirm purchase details. They told me to wait 28 days
I waited a bit longer due to COVID and 2 months later still not received them. I contacted the supoort team again and they agreed there was a problem but nothing they could do. They told me I would have to purchase them but they can't garuntee they stock them in store. I was then told to "look online. You may find a bargin"
If you contact Samsung customer support through online, they might be able to get some sent out for you. A copy of your proof of purchase is required.
I got these from Amazon I've changed the original black nib for one of the new white ones and the appear after a quick use to work very well, they come from China and took about three weeks to arrive.