When you try to erase, o/PARASHOOT tells you it can't write to the card — it can see the card but isn't allowed to modify it. There are three common causes; check them in this order.
1. A lock switch on the card
Most memory cards (SD, some CFast, microSD adapters) have a small physical write-protect switch. Make sure it's in the unlocked position, reinsert the card, and try again.
2. A lock switch on the card reader
Some readers have their own write-protect slider, independent of the card. The Angelbird CFast 2.0 reader is a common example:
3. macOS: Full Disk Access not granted
On macOS this often isn't physical write protection at all. If o/PARASHOOT hasn't been granted Full Disk Access, macOS blocks it from writing to the card, and it looks exactly like a write-protected card.
Open o/PARASHOOT Settings — menu bar icon → More → Settings — and check the Full Disk Access row. If it doesn't say Granted, click Grant Full Disk Access, enable o/PARASHOOT in the list that opens (use the + button to add it if needed), then relaunch the app and try again. See also Troubleshooting o/PARASHOOT.
Still can't erase?
If the card and reader switches are unlocked and Full Disk Access is granted, contact us with your o/PARASHOOT version, macOS version, the card and reader model, the exact message shown, and your log file — see Contacting support and getting your log file.