He verificado tu código y encontré algunas discrepancias.
Yo empecé de 0 y esto funciona bien
/*
* This sketch demonstrates how to set up a simple HTTP-like server.
* The server will set a GPIO pin depending on the request
* http://server_ip/gpio/0 will set the GPIO2 low,
* http://server_ip/gpio/1 will set the GPIO2 high
* server_ip is the IP address of the ESP8266 module, will be
* printed to Serial when the module is connected.
*/
#include <ESP8266WiFi.h>
#include <ArduinoOTA.h>
const char* ssid = "Surbyte";
const char* password = "password";
IPAddress ip(192,168,1,227);
IPAddress gateway(192,168,1,1);
IPAddress subnet(255,255,255,0);
const int rele1 = 13;
const int rele2 = 12;
int val, val1 = 0, val2 = 0;
int periodo = 40000;
byte temp = 0;
unsigned long tiempoAnterior = 0;
int periodo2 = 40000;
byte temp2 = 0;
unsigned long tiempoAnterior2 = 0;
// Create an instance of the server
// specify the port to listen on as an argument
WiFiServer server(1088);
void setup() {
Serial.begin(115200);
delay(10);
// prepare GPIO2
pinMode(2, OUTPUT);
digitalWrite(2, 0);
pinMode(rele1, OUTPUT);
pinMode(rele2, OUTPUT);
digitalWrite(rele1, HIGH);
digitalWrite(rele2, HIGH);
pinMode(4,INPUT);
// Connect to WiFi network
Serial.println();
Serial.println();
Serial.print("Connecting to ");
Serial.println(ssid);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
WiFi.config(ip, gateway, subnet);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
ArduinoOTA.setPassword((const char *)"1234");
Serial.println();
Serial.println();
Serial.print("Conectado a ");
Serial.println(ssid);
Serial.print("IP:");
Serial.println(ip);
Serial.printf("MAC Address = %s\n", WiFi.softAPmacAddress().c_str());
Serial.print("Puerto: 1088");
Serial.println();
Serial.print("Ordenes: arriba/abajo");
Serial.println();
Serial.print("Ordenes: arribatodo/abajotodo");
Serial.println();
ArduinoOTA.begin();
// Start the server
server.begin();
Serial.println("Server started");
// Print the IP address
Serial.println(WiFi.localIP());
}
void loop() {
// Check if a client has connected
WiFiClient client = server.available();
if (!client) {
return;
}
// Wait until the client sends some data
Serial.println("new client");
while(!client.available()){
delay(1);
}
// Read the first line of the request
String req = client.readStringUntil('\r');
Serial.println(req);
client.flush();
// Match the request
int val1 = digitalRead(rele1);
if (req.indexOf("/arribaon") != -1) {
digitalWrite(rele1, LOW);
digitalWrite(rele2,HIGH);
Serial.println("Subiendo");
temp = 0;
temp2 = 0;
}
if (req.indexOf("/arribaoff") != -1) {
digitalWrite(rele1, HIGH);
Serial.println(".");
}
int val2 = digitalRead(rele2);
if (req.indexOf("/abajoon") != -1) {
digitalWrite(rele2, LOW);
digitalWrite(rele1,HIGH);
Serial.println("Bajando");
temp = 0;
temp2 = 0;
}
if (req.indexOf("/abajooff") != -1) {
digitalWrite(rele2, HIGH);
Serial.println("Stop");
}
if (req.indexOf("/abajotodo") != -1) {
tiempoAnterior=millis();
temp =1;
digitalWrite(rele2,LOW);
digitalWrite(rele1,HIGH);
Serial.println("Bajando persiana");
}
if ((millis()>tiempoAnterior+periodo)&&temp==1){
digitalWrite(rele2,HIGH);
temp = 0;
Serial.println("Persiana completamente bajada");
}
if (req.indexOf("/tiempo") != -1) {
Serial.println(millis());
Serial.println(tiempoAnterior);
}
if (req.indexOf("/arribatodo") != -1) {
tiempoAnterior2 = millis();
temp2 = 1;
digitalWrite(rele1,LOW);
digitalWrite(rele2,HIGH);
Serial.println("Subiendo persiana");
}
if ((millis()>tiempoAnterior2+periodo2)&&temp2==1){
digitalWrite(rele1,HIGH);
temp2 = 0;
Serial.println("Persiana completamente subida");
}
// Set GPIO2 according to the request
val = val1;
digitalWrite(2, val1);
// Prepare the response
String s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n";
s += "<html><p>GPIO is now :";
s += (val)?"high":"low";
s += "</p>";
s += "<p>Rele 1 :";
s += digitalRead(rele1)?"OFF":"ON";
s += "</p>";
s += "<p>Rele 2 :";
s += digitalRead(rele2)?"OFF":"ON";
s += "</p></html>";
// Send the response to the client
client.print(s);
delay(1);
Serial.println("Client disonnected");
// The client will actually be disconnected
// when the function returns and 'client' object is detroyed
}