升级后需要重新激活吗？
不需要。授权信息保存在 data 目录，升级只替换程序本体，完成后 Pro 自动恢复，无需重新输入授权码。
断网时 Pro 还能用吗？
可以。授权验证在本地完成（数字签名校验 + 7 天密钥缓存），短时断网不影响 Pro 功能；长时间离线后重新联网会自动刷新授权状态。
支持几台设备？
单个 Pro 授权码绑定一台私有部署设备（基于硬件指纹）。同一台设备重装系统后重新激活会自动恢复授权；更换设备暂不支持换绑，需重新购买授权；如有特殊情况可联系客服咨询。多用户与 RBAC 权限（管理员/成员/访客）为 Pro 内置功能，可在控制台创建多个子账号并分配权限。
是否支持退款？
授权码未激活前可联系客服申请全额退款；一经激活不支持退款，详见退款政策。订阅前请先用基础版充分体验核心功能。
到期后怎么办？
到期后 Pro 功能自动收回，但你的书签与配置数据不会丢失，续费后可立即恢复 Pro 能力。续费支持叠加：新授权码时长会自动累加到当前到期日之后，不会自动扣费。
买断版的升级政策？
买断授权覆盖现有功能的持续大版本升级，功能范围与年度版一致，无隐藏付费墙。
Do I need to re-activate after an upgrade?
No. License data lives in the data directory; upgrades replace the binary only and Pro restores automatically — no need to re-enter the key.
Does Pro work offline?
Yes. License validation happens locally (signature check + 7-day key cache), so short outages never affect Pro features; the license state refreshes automatically once you are back online.
How many devices?
One Pro license binds to one self-hosted device (hardware fingerprint). Re-activating on the same device after a reinstall restores automatically; device transfer is not supported — a new license is required (contact support for special cases). Multi-user & RBAC (admin/member/guest) is built into Pro — create sub-accounts and assign roles.
Refunds?
Un-activated licenses can be refunded in full via support; once activated, licenses are non-refundable — see the refund policy. Try the Free edition first.
After expiry?
Pro features are withdrawn but your bookmarks and config remain. Renew to restore instantly. Renewals stack: a new key extends the current expiry date — no automatic charges, ever.
Upgrade policy for the lifetime plan?
The lifetime license covers ongoing major-version upgrades of existing features — the same feature set as Yearly, with no hidden paywalls.