Enemy Control

Hey guys. I just made a script that is supposed to randomly spawn enemies at 1 of four spawn points but its only spawning at 1 spawn point and the enemy that is supposed to follow the player that was working before the spawner was added isnt working either. These are the scripts I am using.
Script1. The Spawner Script
Script2. The Enemy Script

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class Spawner : MonoBehaviour {
6.  
7.     public Transform[] spawnPoints;
8.     public GameObject[] monsters;
9.     int randomSpawnPoint, randomMonster;
10.     public static bool spawnAllowed;
11.  
12.     // Use this for initialization
13.     void Start () {
14.         spawnAllowed = true;
15.         InvokeRepeating("SpawnAMonster", 0f, 1f);
16.     }
17.    
18.     // Update is called once per frame
19.     void Update() {
20.  
21.     }
22.    
23.     void SpawnAMonster()
24.     {
25.         if (spawnAllowed)
26.         {
27.             randomSpawnPoint = Random.Range(0, spawnPoints.Length);
28.             randomMonster = Random.Range(0, monsters.Length);
29.             Instantiate(monsters[randomMonster], spawnPoints[randomSpawnPoint].position, Quaternion.identity);
30.  
31.         }
32.     }
33. }
34.  

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. public class EnemyController : MonoBehaviour {
6.  
7.     public float speed;
8.     public Transform target;
9.  
10.     public Vector2 SpawnPoint;
11.  
12.     // Use this for initialization
13.     void Start () {
14.         target = GameObject.FindGameObjectWithTag("Player").GetComponent<Transform>();
15.     }
16.    
17.  
18.  
19.     // Update is called once per frame
20.     void Update () {
21.  
22.         transform.position = Vector2.MoveTowards(transform.position, target.position, speed * Time.deltaTime);
23.  
24.     }
25.  
26.     //void OnCollisionEnter2D(Collision2D collision)
27.         //if (collision.gameObject.tag == "Player")
28.             //Destroy(collision.collider.gameObject)
29.  
30.     void OnTriggerEnter2D(Collider2D col)
31.     {
32.         if(col.tag == "Player")
33.         {
34.             col.transform.position = SpawnPoint;
35.         }
36.     }
37. }
38.  

Thanks.