status always showing not connected

Dear Developer,

i install redis object cashe plugin…after installing plugin showning not connected error…please help me…i not have any khowledge about programming, i am begginer…please guide me step by step in easy way.

Hopefully Thankyou.

This is my Diagnostics –

Status: Not connected
Client: PhpRedis (v5.3.2)
Drop-in: Valid
Disabled: No
Ping: 
Connection Exception: Connection refused (RedisException)
Errors: [
    "Connection refused"
]
PhpRedis: 5.3.2
Relay: Not loaded
Predis: Not loaded
Credis: Not loaded
PHP Version: 7.4.27
Plugin Version: 2.0.23
Redis Version: Unknown
Multisite: No
Metrics: Disabled
Metrics recorded: null
Filesystem: Working
Global Prefix: "wpve_"
Blog Prefix: "wpve_"
WP_REDIS_HOST: "103.209.176.128"
WP_REDIS_PORT: "3005"
WP_REDIS_PREFIX: "Express-24-"
WP_CACHE_KEY_SALT: "Express-24-"
WP_REDIS_PASSWORD: ••••••••
Global Groups: [
    "blog-details",
    "blog-id-cache",
    "blog-lookup",
    "global-posts",
    "networks",
    "rss",
    "sites",
    "site-details",
    "site-lookup",
    "site-options",
    "site-transient",
    "users",
    "useremail",
    "userlogins",
    "usermeta",
    "user_meta",
    "userslugs",
    "redis-cache"
]
Ignored Groups: [
    "counts",
    "plugins",
    "themes",
    "blog-details",
    "blog-id-cache",
    "blog-lookup",
    "global-posts",
    "networks",
    "rss",
    "sites",
    "site-details",
    "site-lookup",
    "site-options",
    "site-transient",
    "users",
    "useremail",
    "userlogins",
    "usermeta",
    "user_meta",
    "userslugs",
    "redis-cache",
    "blog_meta"
]
Unflushable Groups: []
Drop-ins: [
    "Query Monitor Database Class v by ",
    "Redis Object Cache Drop-In v2.0.23 by Till Krüss"
]

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