After several weeks of testing TheArenaApp, I've concluded, based on real-time experience and facts, that the app has several significant issues:
Centralized Structure: The app is highly centralized in its decision-making, hosting, and other operations.

Lack of Expertise:

The team demonstrates a lack of understanding and expertise in blockchain and crypto.

Poor Communication:

Poor communication with users addressing issues and response times are very poor, laterally no responses.

Currency Concerns:

Similar to FriendTech, it’s likely that the native $AVAX currency for trading tickets will be replaced by an Arena token, resulting in users losing their $AVAX.

Non-transparent Point Distribution:

Points distribution is delayed and lacks transparency. While there is some information provided in the Airdrop section, it is overly general, creating opportunities for manipulation.

Low-quality Content:

The platform does not provide quality content, instead being filled with bots and only offering giveaways.

Biased Trending Page:

The trending page seems to be reserved for the team and their associated accounts. Despite having posts with more likes, reposts, and comments than many on the trending page, my posts never appeared there. Arena did not respond to my inquiries about this issue.

And more!

The only positive aspect is the control users have over their private keys within the Arena wallet.

While Arena can operate as they choose, Avalanche should approach with caution and refrain from supporting such apps, as they can potentially harm the reputation of #Avalanche.