There are three separate limits.
PvEAllowStructuresAtSupplyDrops, off by default). Players know of no setting that changes the build range near strangers.TheMaxStructuresInRange). Platform saddles and rafts have their own limit (PerPlatformMaxStructuresMultiplier)./tellmelimit in chat shows your tribe's count. At the cap, a new piece can be placed only after one is removed. ASA runs no per-tribe piece limit./tellmelimit in chat to see your tribe's count. The limit is per map, so remove unused or temporary pieces on that map to make room.Building near supply drops, the in-range cap and the platform limit are server settings, and the ASE piece limit is the same on every ASE map; any change is the owner's decision. An admin can read your tribe's piece count from the saves if /tellmelimit does not answer. If another tribe's pieces block you in a way the structure rules forbid, report it with the map, the location (LAT/LON) and a screenshot.
Tell an admin the map, the time (the clock in your profile menu shows the server's time), your character's name, what you carried or had uploaded, and the exact message on the screen. For a transfer: both maps and both times. Report the same day — the backups reach back only about two days. Contact admin is in your profile menu; the Guides page has a question box.