Trouble getting Wifi to run on new tv.

bought a cheap LG 32" tv to use in a bedroom and it runs perfectly on the freesat as expected. It wanted to connect to Wifi, and as I have a pretty secure wifi password, about 24 mixed charactors, I thought it would be easy. Apart from having ongoing eye trouble in one eye which has me changing glasses from distance to closeup constantly to read the remote and the screen, I eventually got the Wifi password down and tried to get it working. No way, the area code was required, whatever that is. Could it be related to the internet provider, Virgin Media in this instance? My smartphone runs Wifi at home no problems, the old one didn't, but that was due to the Wifi password being too long by one charactor, but the old phone was only 3G, so I left it at that.
The tv is an LG 32" 720p p/n LG 32LQ630B6LA.

Since the TV you say is old, the encryption (WPA, WPA2, WPA3, AES, SAE, etc.) maybe the problem rather than the length of the password.

Wi-Fi should have nothing to do with the internet provider. You can change Wi-Fi SSID and password the way you like independent of your internet provider. This is what I do.

So please check the security encryption of your router. You can try by changing the encryption of your router's Wi-Fi to WPA/WPA2.

Mobile phones, Android or iPhones since at least from 2021, have no problems connecting to Wi-Fi signals with WPA3-SAE encrytion. But old phones and TVs will certainly have issues connecting to the new encrytion standard.

Hope this info is helpful.

Not exactly old, it is new and still in production, but I only paid £143 including free postage and 5 years warrantee in the UK. I have just googled the p/n and there are some Wifi problems, but haven't had time to check all the problems which seem to be mostly concerned with loosing Wifi.