Thanks for the report and sorry for trouble. We did reproduce the clock not visible issue on Xiaomi Redmi 7A and fixed it internally.
It will likely go out to beta in few days once it passes the QA.
We were unable to reproduce no low on time sound part though.
On my android phone, when time display switches to the "0:09.9" format, I see only "0:..." when playing on my smartphone -- not very helpful!
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Also, I don't get any sound when time goes low (at least when I play 3|0 as I just did) -- shouldn't there be some "dong dong dong" when time is very low? Didn't find anything like that in my settings, there's just "sound: on or off". (And of course I have it on, I hear the "clack ; clack ; ..." for the moves, but no "dong dong dong (?)" when time runs out.)