How safe is it to make payments on LanguaTalk?

All payments made for tutoring on LanguaTalk are processed by Stripe, one of the world's most secure payment companies.

Stripe has been audited by a PCI-certified auditor and is certified to PCI Service Provider Level 1. This is the most stringent level of certification available in the payments industry. To accomplish this, they use best-in-class security tools and practices to maintain a high level of security. You can find more detailed information on this via their website.

Payments for Langua Pro subscriptions are made via Paddle. You can see here that Paddle also takes security very seriously and has passed various security audits.