To access ch 716 Travel XP 4K HDR, or any 4K content (4K on demand and 4K Live channels) you need to have Internet 50 to support the bandwidth. If you do have 4K content but still can't see 716, then something is wrong with your account set up. Chat ...
On your Optik STB connected to your 4K TV ensure that you update the 'aspect ratio' setting. The setting should actually be called 'resolution', but regardless of it's name, set it to "2160p 60hz 4K". If your TV can support 2160p the setting will be...