Hello.

I am using the RB951Ui-2HnD model. I constantly encounter Capctha and Cloudflare verification on the sites I want to enter.

I cannot enter some sites without vpn. What is the reason for this. How can I fix it?

how many people are using your device for internet access? do you have public IP or ISP only gives private IP?

How can I fix it?

Nothing to do with any MikroTik products.

Ask/Change the ISP.

how many people are using your device for internet access? do you have public IP or ISP only gives private IP?

70 people use it. I'm using Static IP, but I don't know what the problem is.

What is the throughput of your ISP? The number of concurrent users, for anything other than checking email and browsing the net, and the "lite" router you have are not a good mix for performance.