I am surprised this thread doesn't mention the invest part even though it's in the title
We actually have a separate thread on investment. Check it out
here. This gambling thread is mainly focused on the gambling portion of our website.
Fairly sure this isn't intended as I've never seen it this way on other sites, but I don't think your dev team has set any limits on the faucet. Usually, other sites require a zero balance or a balance below a certain threshold to be able to use it, but I've been able to claim it 14 times in a row now.

Thanks for sharing. Indeed it isn't working as intended. We have limits of 1x per 2 minutes, 2x per 10 minutes, 5x per hour and 20x per day. We'll look into this, but keep your free bounty

I think this is the greatest case of "great design no UX" I have ever seen. I mean usually designers think they can be UX as well but thats not the case almost all the time, designers are great at designs but UX people are great at where and how to use those designs.
Whoever designed the logos and graphics and all that is an amazing artist and whatever you guys are paying them right now they still deserve a promotion and a salary increase, yet when it comes to placing stuff somewhere or putting some stuff into others or outside that becomes very bad. Ux needs an improvement like yesterday, you gotta hire some UX professional, pay him a bit and get him to rearrange every single thing in your website to the proper order, that way you can probably get a lot more people to gamble with a lot more ease.
Thank you for complimenting our artistic design. We are very pleased to hear that!
Regarding UX, our website is an ongoing work in progress. We are working hard to make it better each passing day and not be complacent like many others
Would you be willing to talk a little bit in person about your ideas for an improved UX? We could give you a small compensation on the website as a reward. Let me know if you're interested
