If you encounter any problems in purchasing and spending coins, maybe you are using previous version so you must update your Wattpad app. Keep track on Wattpad app updates on Google Play.
If you already did it, still the problem is there, please send a ticket on Wattpad Support/Help Center so your problem can be solved by them firsthand.
Here's the link: https://support.wattpad.com/hc/en-us/requests/new?ticket_form_id=48024#formAnchor
I hope this helps! Thank you!
Update as of 10-02-19:
Wattpad is making a way for you to earn coins even if you don't pay for it using regular load or using your credit card. It may take up a few weeks for the feature to roll out. One way to earn coins is by watching ads. For more details, please visit the profile paid Stories and you may also follow them.
June 03. 2021
Kung disabled ang nakalagay sa payment method ninyo, try niyo munang i-remove at ibalik ulit. Nasa more payment settings kung paano mag-remove ng naka-link na account.
BINABASA MO ANG
Purchasing Wattpad Coins
Non-FictionFor those Filipino readers who want to read stories that are included in Wattpad Paid Stories program, but don't know how to, here's a tutorial. Now this work is unedited. But rest assured, you can understand what was written in here. Off you go!