As I see, something's wrong with calculation of Tiebreak [BH].
Tournament playstrategy.org/swiss/VLQV69T3: Leader played 7 rounds. According to results, Tiebreak [BH] = 28.5, though sum of opponents' scores equals 3+3+5+5+4.5+5+4=29.5. If I sum all victories and 1/2 of draws, I get 3+3+5+5+0.5*4.5+0*5+4=22.5 (Tiebreak [SB]) - this is correct. But Tiebreak [BH] is calculated incorrectly, as I see.

Also wrong for #2-#4:
#2 2+3.5+4+5.5+5+4.5+5=29.5 (29 shown)
#3 1+4.5+5.5+4+5+4+3.5=27.5 (26.5 shown)
#4 4+2+4+3+3+5.5+5=26.5 (24.5 shown)

As per FIDE guidelines, byes and opponents who are absent are treated as 0.5 point for the tiebreak.
Therefore, as the leader played two opponents who had byes, the 29.5 (sum of opponents scores) is taken down by a point to 28.5.
I hope that clears up any discrepancy.

11

Thank you for your answer. I cannot find the appropriate FIDE guidelines.

Maybe this rule was effective till 31 August 2023 (handbook.fide.com/chapter/TieBreakRegulationsPre2023)? There is the following phrase:
15.3 For tie-break purposes all unplayed games in which players are indirectly involved (results by forfeit of opponents) are considered to have been drawn.

At rules effective from 1 September 2023 till 31 March 2024 (handbook.fide.com/chapter/TieBreakRegulations2023) and from 1 April 2024 (handbook.fide.com/chapter/TieBreakRegulations042024) there is the following text.
16.1 The following definitions are used in this section:
16.1.1 requested bye: a half-point-bye or a zero-point-bye (note: any round after a participant withdraws is a zero-point-bye)
16.1.2 available-to-play round: any round in which a participant played their game, or ended up without a game due to a pairing-allocated bye, the opponent did not arrive to play, or unforeseen circumstances that resulted in the award of a full-point-bye
16.2 Unplayed rounds can be divided into the following categories:
16.2.1 Pairing-allocated byes or full-point byes
16.2.2 Forfeit wins
16.2.3 Requested byes that are followed by at least one available-to-play round
16.2.4 Forfeit losses
16.2.5 Requested byes that are not followed by any available-to-play rounds
16.3 When a participant has unplayed rounds, for the sole purpose of calculating the tie-break of their opponents, the participant's score is adjusted in the following way:
16.3.1 Unplayed rounds of categories 16.2.1, 16.2.2, 16.2.3 and 16.2.4 are evaluated with the result (win, draw, loss) corresponding to the awarded number of points or, for teams, match points and game points.
16.3.2 Unplayed rounds of category 16.2.5 are evaluated as draws.

As I understand, at the tournament it was pairing-allocated bye (category 16.2.1). According to 16.3.1, unplayed rounds of this category are evaluated in a usual way.

Am I missing something?