Why was the election allowed to proceed if one candidate declared $0 in campaign funding and that's apparently impossible and obviously a lie? Annulling an ele

Why was the election allowed to proceed if one candidate declared $0 in campaign funding and that's apparently impossible and obviously a lie? Annulling an election is never a good look, rarely ever instills confidence in the citizenry or those abroad, so it needs to be done in absolutely necessary circumstances. I don't want pro-Russian candidates to win anywhere after their invasion of a sovereign nation, bombing of hospitals and schools, and other brazen acts of destruction as well as the warrant from the ICC for the arrest of their head of state. At the same time, I don't want democracies to backslide to avoid election of candidates I don't like, and I'm seeing a lot of democratic backsliding these days in various countries.