Smart bulbs

No matter how many times I set the correct password for any of my 6 bulbs, within seconds the red ! returns. 

I don’t know if this is really a major problem or not because they all work via Alexa?
Any ideas?

Dear user,
Thank you for your message.
Please uninstall and reinstall the Lepro app or use another device to try.
Please feel free to contact us if there are any other questions.
Best regards,
Lepro Customer Service Team
Did what you suggested but it’s still the same