Solana-based meme-coin launchpad Pump.fun has halted UK access after an FCA warning for operating without authorization. This coincides with declining prices for Solana meme coins like Bonk and DogWifHat (WIF), amid a broader market downturn. While the impact of Pump.fun's closure is uncertain, investors are eyeing more sustainable projects like the DeFi crypto exchange Lunex Network.