@David-TP  hi no it work correctly but when i set dns manually say reconfig parament and i think cant resolved dns.there is no beta update?

Changing your DNS is not the same as using a proxy or a VPN. All 3 are different things. That said, some VPNs do have their own DNS.

DNS is just the system used to fetch websites, i.e. when you type facebook[dot]com the DNS system is the one responsible for matching the domain name with the right IP address. Presto, your browser gets to the right page without you having to remember a random IP.

Changing your DNS can be done right now and it's not that complicated, but it does differ from one OS/device to another. You can opt for Cloudflare  or Google's DNS  and there are easy tutorials on how you can do it on your device and OS.

If your ISP tech said this would solve the issue, this is the fastest/safest solution. I'd go for Cloudflare. It's free and likely a safer/better choice than your ISP's