Multiflow@Multi.tech

Has anyone used this code-blocks development kinda thing before? Looks kinda shady now with no documentations at all. Really similar to flowiseai i would say. I was checking this out yesterday and realised its home page has became a login page with 3 options(Google, Github or Microsoft), which was different from what i seen from the others showcasing it(a rather purple-ish background). i did not really think much about it back then and just sign in with my google account. Everything looks the same as depicted. Just find it shady that i dont see any documentations about it at all. Just tryna check with others who are using it to see if its safe/fully free/ no limited usage on the api. and if its compromised what should i do as i did logged in with my google and there seems no options to deactivate or anything, i did remove the connection with it on google already.