It would be helpful if the OP could provide more details. Might be able to get to the root cause better.

Similar to watery I had no recent problems. We actually made a (somewhat) complicated itinerary for me and Mrs. Qrc two days ago involving 4 sectors to, around and back from Canada and the USA. Needed a day to sort out with the folks we're seeing if everything was okay. Put on hold online like the OP is trying, worked without a hitch. J class, cash tickets, a few months away.

Paid and ticketed it this morning. My colleague who ticketed it said took longer than normal, something about they had to "remake" the booking. But besides the extra hold time (~5 minutes max) worked.