ACCESS 2003 and MySQL - problems with linked tables (no replies)

Hi,
I have an application developed via MS-ACCESS 2003.
I migrated the data (ACCESS tables) to a MySQL 5.7.25.
Then, I linked the MySQL tables to the ACCESS.
Most of data works correctly (viewing the tables content and accessing the data via the Forms).
I have a problem with 2 table:

1. Table contains list of activities (5 fields per record): up to 210 records, all works fine. After adding record no. 211, there is a problem:
when opening the table in ACCESS in view mode, I get the "ODBC - call failed" message, and only 86 records are displayed, where all fields have "#Name?" value.
But, when accessing the table data from the Forms, the data is OK.

2. Table contains list of people details (name, address, etc.): In case of few records in this table, all works fine. But when using the full data (197 records), there is a problem:
In view mode in ACCESS, I can see all data correctly. But I cannot access the data from my Forms. The table and fields are not recognized in the code.

Hope you can help me with these issues. THANKS!