none of your attempts look anything like the elegantota examples given in the lib
this works perfectly on my esp32 dev board, i would start from there
#include <WiFi.h>
#include <WiFiClient.h>
#include <WebServer.h>
#include <ElegantOTA.h>
const char* ssid = "....";
const char* password = "....";
WebServer server(80);
void setup(void) {
Serial.begin(115200);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
Serial.println("");
// Wait for connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssid);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
server.on("/", []() {
server.send(200, "text/plain", "Hi! I am ESP32.");
});
ElegantOTA.begin(&server); // Start ElegantOTA
server.begin();
Serial.println("HTTP server started");
}
void loop(void) {
server.handleClient();
}