Can't place objects correctly in Foundry, no edges to see

If it’s any help, my current website, made in iWeb still, is https://www.goravani.com and I am currently making the new home page, somewhat similar to the old. The reason I’m doing this at all is that iWeb is 32 bit, so either I stay on Mojave forever, or I remake my website in a Catalina compatible software like RW. I chose that. So I’m starting out. I’m used to Mac GUI, rely on it, not used to this non visual approach. Heart of the problem.