Here's the situation.
On the one hand, COVID is unpredictable, and committing to dates for May now carries certain risks (but this can be resolved through agreements about the possibility of rescheduling).
On the other hand, work is being done on options for Moscow (Moscow Oblast) and Moldova.
And regarding St. Petersburg, if I understood Roma correctly, they are holding the reservation until November 14th, and they expect a prepayment on November 14th.
"Совесть - она либо есть, либо её нет" (с) RedWhait HP