wrong satellite using a specified freq and symbol

A BER=0 is unlikely unless the outlink carrier is unusually very high level or your dish exceptionally large.  A BER of about 0.00001234 should be expected for a LinkStar modem, and it should vary slightly each time you measure it.  If you slightly mispoint the dish the BER should increase.   A stuck zero value suggests an invalid readout to me.

If the same modem is moved about then it may need to be decommissioned and recommissioned at the new site with different lat-long coordinates before it will successfully transmit at the correct time.  Explain to the hub and seek their advice.  They need to put your site location into their database.

The LinkStar modem should give slow flashing green, then fast flashing green as it acquires the correct carrier.  Do tclgets, pcr should be true.

If you are on the wrong satellite, the next one will be in a line along the orbit.  From Nigeria the orbit is roughly east to west across the sky, via just south of directly overhead.

A 45 deg error in polarisation setting (for a linear polarisation system) will give you cross pol interference at the same level as the wanted signal, both at half level, so you may receive full total power but complete failure to lock.

Please post your messages once only, so people can concentrate all their effort to help you in one place. Thanks.

Best regards, Eric.