After power loss, restore the network in dependency order: ISP modem/ONT, controller/storage/database, switch, access points and payment hardware. A portal can come back before the WAN or transaction system is ready.
Modern phones can use a private/randomized Wi-Fi MAC address. If a Piso WiFi platform associates paid time or vouchers with device identity, changing that identity can make a valid session appear missing even though the payment record still exists.
When devices join the SSID but cannot reach the portal or internet, check whether they received a valid client IP, subnet, gateway and DNS. DHCP and DNS failures can look like a broken captive portal even when the Wi-Fi radio itself is fine.
Check whether the plan expired normally, a paused session hit a platform timeout, the device identity changed, the machine rebooted, or the session database was cleared.
Measure the wired backhaul, loaded latency, access-point airtime and client signal separately. Slow service can be caused by the ISP, queueing, overcrowded 2.4 GHz, weak coverage, wireless backhaul or one heavy user.
A voucher can fail because it is mistyped, expired, already redeemed, restricted to a plan/device, or because the portal/session database is unhealthy.
Treat coin detection as a hardware/input problem before changing Wi-Fi settings. Check power, pulse/output wiring, configured denomination/rate and the controller input logs.
Captive portals rely on local routing/DNS/HTTP interception behavior. VPNs, Private DNS/DoH, HTTPS-only browsing, stale sessions and guest isolation can stop the automatic pop-up even when Wi-Fi association succeeds.
AdoPiSoft officially documents connecting to the WiFi vending machine and opening 10.0.0.1/admin for activation. Its activation guide lists username admin and password admin for that workflow. Change/protect administrator access after commissioning and follow your installed version’s account settings.
LPB installations can use 10.0.0.1-style portal or administration URLs, but builds and distributor configurations vary. Do not assume one universal LPB username or password across machines.
