Here are some simple steps to perform before we escalate to deeper troubleshooting.

Round 1 (clearing cache)
1) Go into Android Settings on your device and find APPS
2) Select the APP you are having trouble with (ie. Beast App/PerfectPlayer/etc)
3) Select Force Stop
4) Select Storage
5) Select Clear Cache
6) Reboot your device
7) Retest

Still Experiencing an Issue?

Round 2 (Network)
1) Unplug all devices that connect to your network
2) Unplug your Router (if applicable)
3) Unplug your Modem
4) Wait 5 minutes to allow the network to flush
5) After 5 minutes has passed plug everything back in the reverse order
6) Retest

Still Experiencing an Issue?

Round 3 (Fresh Start)
1) Go into Android Settings on your device and find APPS
2) Select the APP you are having trouble with (ie. Beast App/PerfectPlayer/etc)
3) Select Force Stop
4) Select Storage
5) Select Clear Cache
6) Select Clear Data
7) Select Uninstall
8) Restart your device
9) Download a NEW copy of the APP in question and install it
10) Retest

If you are using a VPN you should let us know. This can solve issues but can also create them.