NTRIP client

Hello everyone!
I have Someone these days has been able to use the mobile topographer pro application, because before if it connected well but I am needing in these days and it no longer connects ntrip I thought because in the documents is the version 2019.06.01 as seen in the video tutorial and I thought that for the updated version the 2021 but it does not connect me, and the detail is in ntrip but I do not know why someone who has the solution is due