Previously we informed when you change the device, the following is done by the system: Your device is considered a new device and is valid again for a FREE 14-day period All master data, categories, items etc., will be synced back to the device The ending stock balance will be synchronized Transactions that were previously on Device / Offline, we do not re-synchronize. This is to avoid hangs, considering that the transaction data may be very large because it has been running for years, but all your synchronized data is still on the pro.ireappos.com, web admin, so to view transactions, please go to the web admin. To subscribe, you can claim a replacement voucher. Here are the details for changing the device: https://www.ireappos.com/en/how-to-ireappos-pro/change-device-id-if-stolen.php