Sorry for the slow reply. Three fixes have gone out since; the first is the most likely match.
Tapping Go again while it was loading cancelled your own page. The Go control is a link rather than a button (needed for unrelated reasons), and the code meant to disable it during a load silently did nothing on a link — it looked disabled but still accepted taps. Every extra tap started a fresh load and discarded the one you were already waiting for, so during a several-second wait an impatient second tap was enough to make the page never appear. Extra presses are now properly ignored until the load finishes or fails.
Pressing Go before start-up finished — see Isnt loading.
Connection start-up failures that were never retried — see Please help me.
If it still doesn’t come up, mentioning whether it’s one site or all of them helps a lot.