Undos during auction
I discovered yesterday that Undos are not permitted in online games/leagues, including matches played privately, organised by LBHCBA. This followed an auction on BBO which went p - 2NT explained as weak -
Chat 'How weak' from 3rd in hand, Chat 'I can't find the Undo button. I intended to bid 2S but misclicked 2NT' from opener.
After a call to an EBU TD and on their advice play resumed with opener's partner bidding 4S. In the end all agreed this had no effect on the result as partner had 22 HCP AJx Spades so 3NT and 4S making contracts it's easy to reach after either 2S or the obvious (to partner as shows 20-22) 2NT misclick.
The immediate solution appears to be that Undos should be enabled in online matches pending a rule change by LBHCBA. If not, how should a player proceed if they misclick in a non-trivial situation?*
*trivial might include 1C/1D with a NT rebid and equal length or 1C/1S/1NT with a 4333 15 count.