Aeroplan booking woes - Hotels

[Ausbt]

I made a recent points booking for a hotel as my 50K points were about to expire under the HSBC deal. The next day I received a message that the booking had been cancelled. Had to call CA to sort it out, who told me "we just thought someone spending 50K points was suspicious so we blocked it". Ok then. They reactivated my account so I then attempted to rebook the same hotel. When entering guest details into the booking, it simply won't accept a telephone number longer than 5 digits after the prefix field '+61'. I tried experimenting with other country prefixes and can see that other fields have different lengths. I also tried on multiple browsers on two different devices. Anyone ever have a similar problem? I plan to cancel my HSBC card in December so this is really last chance to use.