alosso:
Inform WGT - "Contact" below.
Remember that free level-up rental is only two hours.
Also make sure whatever information you have supplied for payments to WGT is up-to-date.
I rarely play mobile (looks like you might) so I am not that familiar with renting clubs on mobile. I actually never rent one on PC either - I have already identified which clubs I want in the future (and at what level they are available) and rent and then buy them at discount at level up.